I don't mind HD remakes. If I don't care for the game, I won't buy it. If it's a stellar game, I'm more than happy to relive the moments in HD. What would be even better, though, would be renewing the game in more respects than just graphics. For example, GTA 3 with game mechanics upgraded to San Andreas level alone would be brilliant. Add HD to the mix and I'll definitely buy it again (for a third time).
Whole Ratchet & Clank series running on my PS3 (HD with trophies) would also be great.
At least on PS3 and Xbox 360 we would get HD remakes. On Wii there are just SD remakes with bad controls.