i work in a game store too, great fun all round
couple of nice perks so far:
-free copy of zelda collectors edition (which we cant sell, but was traded in)
-the odd free promotional tshirt or other merchandice
-25% off new games, and 30% off preowned games
-free copy of Rayman for the Wii one it comes out (we currently have the most Wii preorders in scotland, something like 93 so far, and should it continue the manager gets a free Wii and every launch game, which he is going to split with the staff, and i lost 'dibs' on zelda or red steel)
the pay isnt fantastic (above min wage), but its better than McDonalds