ah.the warcraft 3 series.finished it in 2003,brings back memories.It is one of the greatest if not the greatest game i have played so far(and I have played a lot).Another game which left a mark in my mind was return to castle wolfenstein(2002)
single player.It is not critically acclaimed but is the BEST gaming experience i have ever had.
Just turn off the lights and watch it blow away Doom 3.