Crossroads mainly sells necessary sundries like sunglasses and film. You can get postcards and rain gear here, too, as well as information. However, if you really want info and help planning your day, look left. At the very left of the entrance is Guest Relations, and they've done wonders for me, getting last minute dining reservations and such.

Right next to Guest Relations is Sid Cahuenga's One-Of-A-Kind. If you're interested in collection celebrity memorabilia, you have found your heaven. They've got a mind boggling number of genuine autographs, plus items owned and worn by famous people. Considering their value, I thought the prices were reasonable.