Came across this series on Youtube... nice trip down memory lane.

The History of Unreal:

Unreal: https://www.youtube.com/watch?v=jm5QHal29kI

Unreal Tournament: https://www.youtube.com/watch?v=6ZL-o9cfRc0

UT2003: https://www.youtube.com/watch?v=BZ36ED_bL1g

Unreal 2: https://www.youtube.com/watch?v=aDNKP_GdoR0

UT2004: https://www.youtube.com/watch?v=70i_VzLt_ZI

Unreal on Console: https://www.youtube.com/watch?v=ezIcjILMxYE

Unreal Tournament 3: https://www.youtube.com/watch?v=gOEtP3PaRTA