A good anime?

"Usually, it's the other way around". I guess 당신 don't know just how much harem 아니메 outnumbers reverse harem 아니메 by. xD

Here are a few suggestions (That have ecchi, which is common for harem anime):
• Rosario Vampire
• Kampfer
• Kore wa Zombie desu ka?
They're all good, but Korezom is easily the best; it also has the least ecchi of them.

A couple of non-ecchi shows that contain the element of girls chasing a guy: Baka to Test to Shoukanjuu, Denpa Onno to Seishun Otoko, and possibly Code Geass to a certain extent.

I've gotta warn 당신 though, I couldn't think of one in which the guy is particularly hot, except maybe Code Geass, depending on what 당신 think of Lelouch. Sorry 'bout that. ._."