I've just put together an HTPC build based on Core i5 2400, GA-H67MA-D2H-B3, and using a low-profile Sparkle 9800GT that I had spare.
I got it all working nicely by hooking up to an old monitor, installed Lion, full QE/C, blah blah blah.
Then I tried hooking it up to my TV via HDMI, and the...