I think he's great.
I'm not sure he's quite as knowledgable as he appears. He has answers fed into his ear on QI. He is certainly very intelligent, though.
Do I like Stephen Fry? I adore the man....with a passion. I love his sense of humour but like you say, he is so knowledgeable and that's very sexy....♥♥
Love him (although leaving him for gness). He is fully aware he looks smug and says he can't really help it. I think he's funny, intelligent and just old-fashionedly charming.
I love him and try to watch anything he does. I also have all the audiobooks he has narrated, I just love his voice it's quite soothing, I wish he would read all audiobooks.