The new lesbian romance Elena Undone is grabbing internet hits for its 3:24 minute clip purporting to show the longest screen kiss on record. I'll take Ingrid Bergman and Cary Grant in Alfred Hitchcock's Notorious. Check clip below. No contest. (UPDATE: There's debate on who has the longest screen kiss--does it require lip-lock?)
The clip below shows two erotically-charged women making out: this, as we all know, also tends to play well for men.
Which reminds me: one of the amusing bits in the upcoming The Kids Are All Right is long-time lesbian partners (Annette Bening and Julianne Moore) using gay male porn as inspiration in the bedroom.