I haven't played Wasteland but aside from the XCOM series and its fantasy clone Massive Chalice, the Disgaea series is my favorite recent turn-based tactical series. The MMO Dofus and it's sister game Wakfu also have turn-based tactical combat, though it's a little different since you are mainly controlling one unit instead of an army. Pox Nora is a hybrid TCG/tactical game where each unit card in your deck corresponds to placing a unit onto the tactical battlefield, it's pretty cool.
Good older tactical games include Azure Dreams and Eternal Eyes for PS1.