I just looked at some old posts and from memory, from the December 08 drops I got:
PS3 SixAxis Controllers, $15.97
NFL Head Coach XBox, $0.47
Singstar PS3 Bundle, $9.97
Singstar Amped Bundle, $1.97
Donkey Kong Barrel Blast Wii, $4.97
So there were some good drops last December.
The problem is this year, there is very little right now at the $9.97 - $14.97 price point so I don't see much dropping to $4.97 or less.
I wouldn't mind seeing the games being less YMMV and enter the clearance cycle that are currently full price but on clearance at other stores like Animal Crossing Wild World finally dropping lower than $34.99 it is priced at my local Sears.