@sungahymn: Thats a good idea. Dammit.
Just before E3 time, that's when it's just starting to look like summer, the buzz of E3 rumors are in the air, and it's typically when arcade racers and rockstar games release. Examples of mid to late may titles: Blur, Split second, Red dead redemption, LA noire, Max payne 3.
Overall, my favorite's Spring just because the weather is so pleasant here (Texas). I would say Summer because I love to get out of school, but Summers here, regardless of how much rain we've gotten (we've actually gotten a lot of rain so far this year), are just so relentless; I've seen the temperature get up to 107 degrees Fahrenheit/41.7 degrees Celsius before.