“Halo 3” goes on sale tomorrow. (And at midnight tonight in some locations.) If you play videogames, this is a big deal: the one-day take for this third and final installment in the mega-selling franchise may top $150 million. That’s Spider-Man and Harry Potter kind of money. So who out there is planning on buying a copy? What other upcoming titles are you looking forward to? Oh, and don’t forget to check out our review of the game, which will be up on EW.com first thing tomorrow.