DJ Hero (PS3, Xbox 360, Wii, PS2)
Price: $119.99–$199.99
Why You Need It: Jay-Z's music propelled the Yankees to victory in game 2 of the World Series and Activision hopes he does the same with their new song mash-up game. DJ Hero features 93 exclusive mixes on-disc and comes bundled with a new turntable peripheral in case your plastic army of 73 guitars, 23 microphones, and 15 drum kits are lonely. We tried it. We liked it. We suggest you do the same.
Why You Don't: There is certainly a level of novelty here, but some may just see it as just another see-buttons, press-buttons affair. Also, we wish we could actually mix songs ourselves instead of just going along with the prearranged choreography.

Tekken 6 (PS3, Xbox 360)
Price: $59.99
Why You Need It: Tekken 6 has been out in Japanese arcades for two years, leaving Americans lustfully waiting patiently for its arrival on their shores. They wait no more! There's a ton of new content (six new playable fighters including hotties Alisa Bosconovitch and Zafina, a lengthy single player campaign) and the ability to fight as a bear has not been compromised.
Why You Don't: You're Japanese and have been living at your local arcade. Your mortgage is past due and you haven't seen a relative, let alone another human, for the past 700 days.

Forza Motorsport 3 (Xbox 360)
Price: $59.99
Why You Need It: It's actually noob-friendly. Those who shy away from the daunting task of having to customize a vehicle to the tiniest detail before hitting the track may have just found their new favorite racing game. FM3 features a pick-up-and-play mode that throws talk of tire camber and suspension height out the window, perfect for those just wanting to feed their need for speed. Over 400 cars are packed onto the disc, driveable on more than 100 tracks scattered around the world which are all presented in stunning 60 frames-per-second HD graphics. Yummy
Why You Don't: The much-delayed Gran Turismo 5 is (supposedly) debuting sometime in early 2010, and it promises to blow competition out of the water.  Of course, it has to be released first.

Ratchet & Clank Future: A Crack in Time (PS3)
Price: $59.99
Why You Need It: We may be many years before we replace real friends with programmed robots, but in the land of video games, there's no tighter bond between living creature and beeping trash can than Ratchet & Clank. The two return in yet another adventure to uncover the truth behind Dr. Nefarious' (for lack of a better word) nefarious plot to destroy the universe. Expect tons of new gadgets and doohickeys to be at your disposal and lots of ugly space aliens.
Why You Don't:The series is beginning to reach the point of becoming stale. There isn't much in terms of ground-breaking novelty here, but, then again, keeping everything familiar to fans of the series might be best.

Grand Theft Auto IV: The Ballad of Gay Tony (Xbox 360)
Price: $19.99 standalone, $39.99 compilation
Why You Need It: Sorry, Niko Bellic: Luis Lopez may just be our new favorite main man. The hoodlum and right-hand to nightclub owner Tony Price is the exact opposite of previous protagonists used in Rockstar's blockbuster GTA IV game. He's rich, he's ruthless, he's Rico Suave with a glock and a heavier Hispanic accent. But, like everyone else, his deals have fallen through and creditors are knocking on his door threatening to take away his paper. His cheese. His cash money, as they say. With a ton of new activities, new multiplayer modes, and the addition of base jumping off of skyscrapers, this is a great value.
Why You Don't: Liberty City isn't as glitzy as we first found it 18 months ago. The setting and gameplay is a bit formulaic, save for the base jumping deal, so those looking for a whole new experience may just want to hold on to that hard-earned dough.