Casino del Sol - though I hesitate to lump it with the other 3 since it looked literally thrown together at the last minute, and they played on what looked like a junior college baseball field.
NFLPA Bowl (formerly Texas vs. The Nation).
East-West Shrine Game
Senior Bowl.
The E-W SG and Senior Bowl are the oldest now. The other 2 are relatively new, and the Casino del Sol game I'd be shocked if it comes back.
The only other 2 I remember was the old Blue-Gray Game on Christmas Day, and there used to be one called the Gridiron Classic where it was Florida vs The Nation.