1. Seinfeld, The Doll (S7E17): Frank Costanza rips the head off the "Estelle" doll, at 2:15
Curb, The Doll (S2E7): Larry rips the head off the "Judy" doll, http://www.youtube.com/watch?v=Vs2476Y8Y7I,
2. Seinfeld, The Junior Mint (S4E20): George - "Yes, I look forward to many years of looking at the triangles." ...after buying $1900 worth of Elaine's dying ex-boyfriend's "triangle paintings". At 4:00
Curb, Shaq (S2E8): Larry - "I could make those triangles and those circles. Is that art? I mean, if I could do it, is that art?" ...when trying to write a letter of recommendation for his "triangle artist" friend, Jeremy.
3. Seinfeld, The Understudy (S6E24): George (who is based on Larry) accidently injures Bette Middler during a softball game, causing her to withdraw from her broadway play "Rochelle Rochelle", the whole city of New York is outraged with George and Jerry, and the whole incident is turned into a media frenzy.
Curb, Shaq (S2E8): Larry accidently injures Shaq during a basketball game, causing him to withdraw from playing additional games, the whole city of Los Angeles is outraged with Larry, and the whole incident is turned into a media frenzy.
4. Seinfeld, The Raincoats (S5E18): George doesn't want to take part in the "Big Brother Program".
Curb, The Bowtie (S5E2): Private Investigator - "I don't see how investigating your adoption case serves my community."
Larry - "What about a Big Brother kind of thing? Not for a long time, maybe for an afternoon, to a movie or something."
5. Seinfeld, The Handicap Spot (S4E22): George (whose character was based on LD) parks his car in a handicap spot and gets chastised,
Curb, The Bowtie (S5E2): Larry uses the handicap stall in the bathroom and gets chastised,
6. Seinfeld, The Smelly Car (S4E21): George (whose character was based on LD) drives Susan to lesbianism,
Curb, The Bowtie (S5E2): Larry causes Funkhouser's daughter to go back to lesbianism.
7. Seinfeld, The Non-Fat Yogurt (S5E7): George thinks Elaine is offering him some of her yogurt just to get a sample of his yogurt (beginning of the episode).
Curb, Kamikaze Bingo (S5E4): Larry thinks Cheryl is offering him some of her Japanese food just to get a bite of Larry's meal
8. Seinfeld, the "Seinfeld" reunion episode of Curb (S7E10): Jerry rants to Elaine about people texting on their Blackberrys during a conversation.
Curb, Kamikaze Bingo (S5E4): Larry rants to Cheryl about people texting on their Blackberrys during a conversation. http://www.youtube.com/watch?v=HUNVXM6cZyM
9. Seinfeld, The Note (S3E1): George - "I don't even like to use urinals. I've always been a stall man!" ...George trying to reaffirm himself that he's straight after he gets massaged by a male masseuse,
Curb, The N Word (S6E8): Larry's long rant about "using the stall over the urinal" to the hospital medical board... at 5:40
10. Seinfeld, The Alternate Side (S3E11): Elaine wants to dump an older man who had a stroke, but refrains from doing so because she fears she'll become a social pariah,
Curb, Vehicular Fellatio (S7E2): Larry wants to dump Loretta who has cancer, but because of "society", he doesn't. So, he plans to make Loretta want to dump HIM.
11. Seinfeld, The Chicken Roaster (S8E8): Kramer enjoys the chicken of a restaurant that he should be protesting, (although, this episode was after LD's departure from the show)
Curb, Palestinian Chicken (S8E3): Larry enjoys the chicken of a restaurant that he should be protesting, (although, this was more a referenece to the Ground Zero Mosque controversy)
12. Seinfeld, The Masseuse (S5E9): Elaine recalls a college classmate who made an obnoxious "ahh" when sipping coffee, http://dailyseinfeld.tumblr.com/post/3346845840.
Curb, Palestinian Chicken (S8E3): Susie makes an obnoxious "ahh" when sipping coffee, .
13. Seinfeld, The Kiss Hello (S6E17): Jerry is uncomfortable with the "kiss hello" and tries to avoid it,
Curb, The Smiley Face (S8E4): In tonight's episode, Larry is uncomfortable with the "hug hello" and tries to avoid it.
14. Seinfeld, The Muffin Tops (S8E21): On the street, George watches a bag for a tourist who never comes back, http://en.wikipedia.org/wiki/The_Muffin_Tops_(Seinfeld_episode) (again, this episode was after Larry's departure from the show)
Curb, The Safe House (S8E2): In a restaurant, Larry watches a laptop for a man who never comes back,
15. Seinfeld, The Pilot (S4E23/24): When coaching the actress who plays Elaine in Jerry and George's sitcom, Jerry mentions that Elaine likes to talk during sex. And, not dirty talk, but chit-chat. http://dailyseinfeld.tumblr.com/post/708475457
Curb, The TiVo Guy (S6E7): Cheryl complains about Larry chit-chatting during sex, at 1:00
16. Seinfeld, The Cigar Store Indian (S5E10): George flips out over the water ring on the coffee table, at 0:27
Curb, the Seinfeld reunion episode (S7E10): Julia flips out over the water ring on the coffee table,
17. Seinfeld, The Cigar Store Indian (S5E10): Jerry asks the mailman where the Chinese restaurant is. The mailman, being Chinese himself, pulls the race card and gets offended at the idea that "because I'm Chinese, I must know where all the Chinese restaurants are located".
Curb, The Surrogate (S4E7): Larry asks a black man (who is standing next to the valet sign, and is wearing clothes resembling that of a valet) to retrieve his vehicle. The black man pulls the race card and gets offended at the idea that "because I'm black, I must be the valet at all social functions".