Used games are always okay.

MUST HAVE:
[360] Call of Duty: Modern Warfare 2
[Brd] Cartagena (not Cartagena 2)
[Brd] Shogun
[Brd] The Viking Game (by History Craft) (Hneftafl, Knave's Table, King's Table, Tablut)
[NDS] Scribblenauts

IF IT'S REASONABLE:
[360] Datel XBOX Headset Adaptor (DUS166-I)
[360] Mercenaries 2
[Brd] Capitol
[Brd] Category 5 (6 Nimmt)
[Brd] Cities And Knights Of Catan
[Brd] Clans
[Brd] Coloretto
[Brd] Elfenland
[Brd] Ghosts! (German: Geister)
[Brd] LOTR Risk: Trilogy Edition
[Brd] Mystery of the Abbey (Clue on steroids)
[Brd] Polarity
[Brd] Puerto Rico
[Brd] Squint
[Brd] Talisman
[Brd] Thurn & Taxis
[Brd] Tikal
[Brd] Torres
[Brd] Who What Where
[Brd] Zendo/Icehouse/Playing With Pyramids/Ice 7
[GBA] Final Fantasy VI Advance
[GBA] Super Dodgeball
[NDS] Air Traffic Chaos
[NDS] Castlevania: Dawn of Sorrow
[NDS] Dragon Quest: Rocket Slime
[NDS] Final Fantasy: Crystal Chronicles - Ring of Fates
[NDS] Final Fantasy IV
[NDS] Henry Hatsworth in the Puzzling Adventure
[NDS] Professor Layton and the Curious Village
[NDS] Professor Layton and the Diabolical Box
[NDS] The World Ends With You
[NDS] Yoshi's Island 2
[PS2] Bombastic
[PS2] God Hand
[PS2] God of War 2
[PS2] Metal Slug Anthology
[PS2] Street Fighter Alpha Anthology (w/Gem Fighter)
[XBX] Hunter the Reckoning
[XBX] Hunter the Reckoning Redeemer
[XBX] Mortal Kombat: Shaolin Monks
[XBX] Radiata Stories

IF IT'S CHEAP:
[360] Blazing Angels
[360] Blazing Angels 2
[360] Farcry 2
[360] Gears of War
[360] Gears of War 2
[360] Grid
[360] Soul Calibur IV
[Brd] Gloom
[Brd] James Ernst's Totally Renamed Spy Game
[Brd] Maskenball Venezia
[GBA] Final Fantasy IV Advance
[GBA] Final Fantasy V Advance
[GBA] TMNT
[Gen] Contra: Hard Corps
[NDS] Children of Mana
[NDS] Feel the Magic
[NDS] Mario & Luigi: Partners in Time
[NDS] Rub Rabbits
[XBX] Gauntlet Legends
[XBX] Jade Empire
[XBX] Mega Man Anniversary Collection

INVESTIGATE:
[Brd] Around the World in 80 Days (Elfland-ish)
[Brd] Ars Mysteriorum (alchemy theme, bid for items)
[Brd] Clocktowers
[Brd] Den of Thieves
[Brd] Dibs (trivia with bidding for questions)
[Brd] Gnummies
[Brd] Great Dalmuti
[Brd] Graymatter (linear Trivial Pursuit)
[Brd] Knock Knock
[Brd] Louis XIV (2-4, influence game)
[Brd] Pirate's Cove
[Brd] Proclaim (get people to guess your word)
[Brd] Sabateur
[Brd] Space Munchkin
[Brd] Struggle of Empires (2-7 Risk-like w/unrest)
[GBA] Golden Sun
[Gen] Sub-Terrania
[NDS] Jump Super Stars (anime fighting game)
[PS2] Bumpy Trot (Steambot Chronicles)
[PS2] Rogue Galaxy (Japanese RPG)

Wii Games To Be Purchased Once I Buy Another Wii:
[Wii] Excite Truck
[Wii] Mario Kart
[Wii] Super Mario Strikers
[Wii] Super Paper Mario

Feeling: amused