I actually have to say, besides the XBox Bundle, that I'm not yet impressed with Wal-Mart's. I'll reserve judgment though until the whole ad comes out and we can get some details.
The $798 50 Inch Samsung Plasma HDTV isn't really a steal unless it's 1080p. Best Buy is clearing out their 52" 720p's right now for a comparable price. If it's 1080p, then yeah, it's worth spending the night in the store.
The $128 Magnavox Blu-Ray I'm assuming is the one that's currently $198. The real question for me is whether it's worth the $50 (at Sears or through Price Match) to move up from entry level to a much much much better player in the Sony BDP-S350 (BD Live Capability).
If the Uniflame grill is one of their 68,000 BTU deals, it's definitely worth checking out at $179.
I suppose we'll just have to wait like everyone else until 11/24 to get some confirmation on this stuff.