http://en.wikipedia.org/wiki/List_of_THQ_games
Quite a large list and only a few notable titles. I guess most recently Saint's Row 2 and WWE Legends. I never played the original Saints Row but the second one was fun as hell if you like GTA style and its multiplayer is what GTA4 should have been. I just don't understand how it's acceptable to send a game to the market that crashes so frequently. SR2 has crashed on me at least 10 times.
If you look at the list its obvious that THQ relies pretty heavily on brand power aimed at younger gamers but by reading these reviews its been becoming increasingly obvious that not nearly enough care and attention go into their development. They also have a good track record of exploiting their brands by pumping out title after title. The Destroy All Humans franchise could have been great, what it did become is sad.
I have some hopes for Red Faction Guerrilla, the demo failed to impress me but it was still fun if you like senseless mayhem and large explosions. Unfortunately now I'd have to pay full price, I'm not sure if its worth it.
Considering how much of a disappointment the Wii has been for me I would recommend checking out de Blob. It is pretty damn fun.