1) Brock Lesnar v. Batista. Batista isn't close to the wrestler that Brock is, but their size is about the same. Brock v. HHH would be another good one, but HHH would be killed if it's 1-on-1, anyway.
2) Triple XL Threat Match: Mark Henry v. King Mabel aka Viscera v. Earthquake. The WWE would need a dozen rings to hold this match.
3) Sabu v. Carlito.
4) Muhammed Hassan v. Rene Dupree