We already have a poll about our ten best guitarists, but we have nothing about drummers. So here, post the five best drummers in your opinion (not favourite). Also, we all love Rina so let's just add her to our list by default and add others to our top five.
Here's mine:

1. Keith Moon (The Who).
2. Chad Smith (RHCP).
3. Aki Hakala (The Rasmus).
4. Nicko McBrain (Iron Maiden).
5. Roger Taylor (Queen).

I'm going to limit my list to rock drummers.

1. Neil Peart (Rush)
2. Keith Moon (The Who)
3. Dave Lombardo (Slayer, Testament)
4. Vinnie Colaiuta (Frank Zappa, Jeff Beck)
5. Mike Portnoy (Dream Theater, Winery Dogs)

My alternate is John Densmore (The Doors).

I play guitar, my last drums lesson was 20+ years ago. So I can only list those who are impressive to me.
1. Dave Lombardo (I had all the Slayer CDs with him on drums)
2. Joey Jordison
3. Pat Torphy (been to his drums clinic)
4. Mike Mangini (been to his drums clinic)
5. Tomas Haake (Meshuggah)

@Metal Mickey

Pat Torphy is very underappreciated by the masses.  I'm attending a tribute show to him next week.  There should be a lot of great drummers present for that one.

On topic--
I knew as soon as I sent my list I was going to forget someone and sure enough I did, but don't know who to take out of my list (maybe Portnoy).  Kenny Aronoff should be recognized as one of the top drummers.  The guy is incredibly versatile and has played with more groups and artists than we could probably name in the entire Band Alphabet game thread.

1. Keith Moon (Rush)
2. John Bonham (Led Zeppelin)
3. Neal Peart (Rush)
4. Tony Thompson (from the bands Chic and Power Station)
5. Phil Collins (Genesis, solo)

Honorable Mention:
Butch Vig (Garbage)
Ahmir "Questlove" Thompson 
Jonathan "Sugarfoot" Moffett (Michael Jackson)
Stephen Morris (New Order/Joy Division) ---- Yes, he's a real drummer with machine-like timing!