Just got back from Microcenter, this deal is DA BOMB.
Picked up a Phenom II X3 720 BE chip for myself ($99), with a Gigabyte MA785GM-US2H mobo ($35, with a $10 MIR on top).
Talked a relative that came with me into getting a combo, they got a Athlon II X4 630 ($99), with a Asus M2N68-AM PLUS ($0.01). Talk about a cheap quad-core setup!
Still have to get some DDR2 RAM for these rigs, probably at NewEgg. They did have some 4GB dual-channel DDR2-800 kits from OCZ for $65 AR, but I hate rebates now so I passed on that.