Out of these games, which should i buy?

Out of fallout 3, assassins creed 2, uncharted 2, gta 4, harry potter 6, blur, and motorstorm all for the ps3 which ones should i get. im probably getting maybe 2-3 of them. thanks.
i crossed out blur and motorstorm harry potter so wats left is fallout 3, uncharted 2, assassians creed 2 and gta 4. since im already getting modern warfare 2 i dont think i need another shooter. so basically im definately getting assassians creed 2, gta 4, and either uncharted 2 or fallout 3. someone gimme gud points about each one. and thanks for the fast repliess
i crossed out blur and motorstorm harry potter so wats left is fallout 3, uncharted 2, assassians creed 2 and gta 4. since im already getting modern warfare 2 i dont think i need another shooter. so basically im definately getting assassians creed 2, gta 4, and either uncharted 2 or fallout 3. someone gimme gud points about each one. and thanks for the fast repliess
oh and also. i dont really like sci fi or aliens unless ur with atleast 1-2 people the whole game.