I gave him a 10. Realistically he's no Rock, Stone Cold, Hogan, Ric Flair or anyone else who crossed over into the mainstream in a big way, but I still have to consider him a legendary talent. Matches, promos, character work are all top notch and he never dipped in quality so much that he lost his relevancy. He has a longevity to him that to this day means he isn't wrestling out of armories and working on small time venues because he has to. If he goes anywhere it grabs attention.
Everyone has already said enough about him, but one of my favorite Chris Jericho moments is when he was still the new guy on RAW and he made fun of the Undertaker for his dumb ass promo where he was talking about driving bikes in the desert with half empty gas tanks and eating snakes and shyt with the Big Show.