video player for emergency - (Jan/08/2012 )

Hi all guys

I need a video player, light, easy and fast

I need it because i faced a problem playing one video on another PC which has no RealPlayer or Media Player...I cancelled my presentation because of such cases

is there any programs that i can use everytime and everywhere and when there are no other alternatives!!

The VLC Media Player is quite good and also availabe as portable version (needs no installation and can be even used from USB stick etc)

thnx hobglobin...th'ts exactly what i need; a portable version than can be used from USB sticks