Behindview 1 and 0 IS the proper command...
Just to clear up any possible misunderstandings, or confusion:
behindview 1 = behindview on
behindview 0 = behindview off
In Unreal, and most all other games, software, etc... 1 is on, and 0 is off.
As well as behindview, you can get other views on certain servers.
I.E.
viewplayer Krall
viewclass tmale1bot
Viewplayer isn't so much a cheat, however hasn't worked on more then 1 or two UT servers. Viewclass is the same thing, only you would use it for coop games.
A neat trick:
summon warheadlauncher
alt fire
type in: behindview 1
Then, you see your rocket
(hard to see until you turn)
Have fun,
- Krall