I don't trust those stream sites so I won't post them, but some top ones that come to mind:
Italia Blue - Booty Over Atlanta scene, when she was plump, one of her first scenes. Loved her ever since then.
Mya Lovely - The scene she did with Slayer, Phatty Girls probably. Fine as hell, came in speaking that french, the way she gave head upside down, slim but still had ass jiggling, good stuff.
Lily Thai - Mr. Chews Asian Beaver or some shit. Got that shit off Limewire. First time I watched a whole scene in it's entirety, at the time I had never saw a chick like her before.
Kapri Styles - Bout It Babes scene. Liked the way she was bouncing that ass all scene.
Monet Devine - Spinal Tap, her 2nd one with Johnny Depth. She just kept cumming and cumming and she looked like she was the one that was open.
And any scene with Jazmin Cashmere, Taylor Ray, Carmen Hayes, Cherokee, Lexi Amor, Pink, Pinky, Tia Cherry, Christina Copafeel, Fire, Flame, Darlene, Violet Vazquez, Gianna, Sophia Castello, Kaylee Kisses or Melrose Foxx.