Yeah, I think people view Ali G with somewhat rose colored glasses. There were many brilliant segments and interviews, but there was also quite a bit of filler with Cohen's characters just doing dumb stuff. But the dumb stuff was still funny then and is still funny now, to me. It's still real to me, damnit!
Even the part where he had a chance to talk to the future US President/The Most Powerful Man In The World Donald Trump, he wasted that opportunity pitching him his dumb ice cream gloves invention.