Half Life wuz nice , although the Xen part wuz totaly f**ked up
Fallout had nice endings
C&C 1 KANE gets blasted by ion cannon (that 1 wuz nice)
and of course the NOD endings (where 2 strike ?)
Although sometimes games are so kewl te always seem to end 2 fast or have a f**ked up ending like RtcW (wtih the stupid knight dude
)