xbla is a life saver during the horrible sweaty games drought. i either read about the decent games in 360m/x360 now, in the forums or word of mouth then i use the horrible hidden away games section on the dashboard to spend my points.
I check XBLA everytime I sign on, looking for new gems. But I've not seen anything of interest in quite a while... they are either games I have never heard of or ones I have that are far too expensive for what they are. I keep my eye on it but things are a changin' for the worse.