DREW BARRYMORE, Scream (1996) The role, a home-alone teen tortured by a prank caller/serial killer, was definitely small: Drew Barrymore's gut-wrenching transformation from perky horror aficionado to hanging corpse took all of 13 minutes in this Wes Craven slasherpiece. But it definitely had impact. For theater audiences, it signaled that the rules of the genre (and movie posters remember Barrymore's prominent billing) could be broken. For me, a total wuss who insisted on watching the VHS tape in daylight hours (9 a.m. on a Saturday morning while visiting my parents), it meant repeated cries for my mother to come in from the next room (she didn't) and multiple suggestions from her that I ''calm down'' (I didn't). CHRISTOPHER MELONI, Wet Hot American Summer (2001) From David Hyde Pierce's awkward advances on Janeane Garofalo to Paul Rudd's too-cool-for-camp 'tude, this quintessential '80s-revival camp movie has many bizarre and irreverent moments. But one performance that never ceases to amaze me is Christopher Meloni's turn as the deranged camp chef Gene. Best known as Det. Elliott Stabler on Law & Order, Meloni displays a natural comedic touch with his insane non-sequiturs (''Now finish up them taters, I'm gonna go fondle my sweaters'') and ability to carry himself in an unthinkably small sleeveless t-shirt. Whether he's talking to a can of vegetables, humping a fridge, or commandeering one of the greatest ''vision quest'' montages in cinematic history, Meloni truly makes his presence felt.