Mark Nicholas has a tendency to get overexcited, but I'd also think seriously about starting to call Lee a great.
I guess if he goes on like this even for another couple of years, he'd be a great. He's had 40 wickets in the last 6 tests of the Australian summer at a little over 20 & bowled some spells of fearsome & absolute top quality fast bowling. His duel with Tendulkar was a fantastic thing to watch & he got Tendulkar quite a few times. After the omission of Gillespie & retirement of McGrath, Lee has finally come into his own & so far has done the job of leading the pace attack perfectly.

Given his fitness level, I believe he'll be going on for another 4 years at least & end his career as a great.