Human Front VS Alien Invasion fps

What other good fps are there that feature humans against aliens, besides halo, Resistance and Killzone? 
 
cheers

Plenty of games...but "good" is a little much in terms of them. Im honestly sick of all of it at this point.

Half-Life

Duke Nukem.
"Damn, those alien bastards are gonna pay for shooting up my ride."
"My name is Duke Nukem - and I'm coming to get the rest of you alien bastards" 
"It's time to abort your whole freaking species!" 
 
Etc

I'm not sure I'd call all of them good but there is the following:

• Blacksite: Area 51
• Quake Wars: Enemy Territory
• Crysis
• Prey
• and while not always considered a proper FPS, the Metroid Prime series
  

System Shock 2

Yeah :) 
 
I'm going to see if i can find some of them, because i wanna get me some aliens!!!! 
 
Thanks guys...

Crysis and Half Life I would agree as other good ones..other than that I dont know.