Unlike Ross Geller's, this list is not laminated, so it is subject to revision. In no particular order:
1) Clooney (even though he's better than a list)
2) Josh Jackson
3) Matthew Fox
4) Naveen Andrews
5) Andy Samberg
Oldies but goodies (i.e., possible alternates): Omar Epps, Malcolm Jamal Warner. One or both may be bumped up once Lost ends.