Nope. No unlockable tables.
The Wii and PSP versions each have 10 tables, PS2 has only 8 I think, and the later-released 360 and PS3 versions host 13 tables. The developer/publisher/whatever added 3 more tables for the release of the Hi-Def version. I own them all except PS2 - and let me tell ya - the Wii takes the cake with it's nudge controls. The added tables on the HD versions are nice to have and all, just the nudging on the Wii is the bees knees. I carry a 2nd copy in my glovebox at all times, just to expose other Wii owners to the greatest video pinball ever created!
"Hey Bucko, shoot again!" -Rudy