Neil Peart - Anything he does. Period. The best of all time IMO.
Tommy Lee. I have to mention him being the huge Crue fan that I am. Pound for pound his solos really don't stand up as some of the greatest, but he's more about showmanship anyway. Plus, his kit sounds phenominal and his bass drum tears right through you when he hits it in concert.
Steve Gadd - He is known as one of the greatest of all time. Rightfully so...fundamentally sound and a total joy to listen to. His solo on Steely Dan's "Aja" is great.
Danny Serraphine - His solo in "Make Me Smile" by Chicago is sure and sweet, and is one of my all time favorites.
John Bonham - He's the only reason I can bear listening to Led Zeppelin anymore, and "Moby Dick" is great.
Steve Smith - I grew up loving Journey, so Smith was the first drummer I ever became familiar with. "La Do Da" off of their "Captured" live disc is great.