Well, well, well, Dominick's seems to be where it's at these days. Jon Sidel's hotty spot keeps attracting all the right life forms--from Brad Pitt to Ewan McGregor, from Moby to Renee Zellweger. Part of the A-list appeal is the theme nights. Tonight through Saturday, it's "The World Is Your Oyster." Think raw oysters and expensive champagne.... Speaking of sexy finger foods, scenester chef Monica May (North/Belly) has big plans for her latest dining venture: Cinespace, a bar and restaurant on Hollywood Boulevard where she'll be the executive chef. Cinespace, scheduled to open around the holidays, will also be a digital movie house, playing cutting-edge films and videos.