Always rent it of course... Make sure.
Myself, I think he's funny, but I think he's funny the same reason I think the interviews are funny on the Daily Show. People look dumb.
The difference here is that oon the Daily Show they're often morons anyway, or most would consider them such. On Da Ali G show, a lot of these people are protecting us, and making the decisions that will affect our lives, and even the world as a whole, for many years.
They're still dumb.
I personally think the $23 would be worth it just to see his character from Kazakhstan... Borat.
"I want to make romance to you... Only if you allow".
Drunk or sober, that is a funny character every week.