Halo, FEAR, Tactics Ogre, Front Mission (forgot which part, I never finished it), Warrock, Warcraft III, Tribes 1 & 3, and there was that game in Cartoon Network I used to play. I don't think it was for kids as it was much, much harder than UFO: AI. It featured squad-, turn-, and LOS-based tactical combat. I think it was called IGPX. It ran for less than a year before it vanished from their site.
And oh, WARHAMMER 40,000: DAWN OF WAR FTW!
Here, having fast reflexes is not so much of advantage as squads live longer than those units in WC3. IMO, fast reflexes should not be a major factor in strategy games. (that's why I like UFO:AI)
Galactic Civilizations 2 is VERY good too. I played it for a time in my friend's cafe but it just takes too much time.