Raiden
Foppish, effeminate and thoroughly unpopular surprise lead character in Metal Gear Solid 2. Now used to refer to any experience of a game pulling the digital carpet from under the feet of your expectations, dropping you onto the arse of shock as your mouth of unhappiness belows "Him? I have to play as him?"

"I heard Rachel led you on just to set you up with her ugly mate?"
"Yeh. She pulled a Raiden on me"

Revolutionary
Obligatory press release word sometimes abused by lazy journalists. Original meaning (to revolutionise) now watered down so far as to indicate something is 'probably maybe going to do something perhaps a tiny bit differently, but not too much'. [Alternatively: Redefining, Never Before Seen, Original]

"Pokemon Battleface Stuff-'Em-All-In 7 will boast revolutionary 'One-On-One' combat, and genre-redefining 'Movement' and 'Level' based gameplay"

RROD
Terminal and inexplicable death knell for your Xbox 360. Can - apparently - be solved by wrapping your console up so warm that part of it actually melts, which sounds less like a solution to us and more like adding insult to injury.

"Ahhhhhhghghgh! I gots the RROD!"

Sony
Schizophrenic console-spitting corporation that brought us SAPS, The Third Place, and a heavily-endowed girl in a pink bikini sitting on a toilet, but also the spectacular own-goal-alicious All I Want For Christmas Is A PSP. Note: Throws lavish parties patronised almost exclusively by hairdressers.

"Has Sony got a clue what it's doing right now?"

Update
Developer euphemism for 'the game wasn't quite finished, but we had to release it, and anyway with Live and PSN you can just download the game you should have been sold in the first place'. Also a compulsory software tart-up for your console that will always come along at the wrong time. Or brick your console. [Alternatively: Patch]

"But, sir, there's a terrible bug in the game that'll delete the player's save!"
"Don't worry about it, Johnson, we'll just fix it in the patch. Sorry, I mean update"