i dont have any clips, but i do have a short list of some lesser known movies/tv shows
1. The Defenders- a girl tells a guy that his enemy has "a good 2 inches" on him.
2. Desperate Housewives- eva longoria has a very shocked look on her face after her husband tells her how big a kid she knows is.
3. Dream Lover - Madchen amick tells james spader shes been cheating on him with a huge cock.
4. Quintuplets - a short kid gets a huge boner during a halftime show of a basketball game and the girl he likes sees it and has a shocked look on her face
5. Til Death - there's an episode where penis size is a main plotline, followed by some insecurities from the male lead.
6. Madonna: Truth or Dare - a few good references when she is laying in bed
7. That's My Boy - adam sandler is in a hot tub with a bunch of hot girls, and stands up to get out, sporting a massive bulge, and all the girls react with shock and awe.
8. Best Night Ever - a girl has a male stripper waving his huge (censored) dick in her face and she makes some comments on it
9. Hebrew Hammer - a girl says shabbot salam or something when unzipping the male leads pants.
10. Sirens - in the third episode of this somewhat funny show, women and men both see a naked man and all are impressed.
11. 2 broke girls - a woman claims that one of the female leads fathers is small, but her friend finds out that he is quite the opposite, and comments about it.
12. Young People Fucking - a man gets another man to sleep with his wife, but the guy is hesitant because he thinks he's too big. the girl's face is one of astonishment, and the other guy in the room comments on it too.
13. Whitecoats - a girl sees a guys dick and is impressed and immediately wants to suck it.
14. Heartbreakers- Jennifer Love hewitt and sigourney weaver are both very impressed by the same guy's package. Making comments like "Wow!"
15. Friends & Lovers - 3 girls get a guy to pull down his shorts and are scared and impressed as they run away. They then talk about it with the guys sister.
I think that's all i have so far, as far as stuff that hasn't been mentioned and is somewhat less well known. Please keep sharing!