Top Of The Heap.

Led Zeppelin is the most influential rock act ever, according to a poll taken by the U.K. Internet radio station Planet Rock.

With listeners casting thousands of ballots over the first three weeks of February, Zeppelin garnered one-fifth of the votes. Here's the full Top 10:

1. Led Zeppelin
2. Queen
3. Black Sabbath
4. Pink Floyd
5. Deep Purple
6. Jimi Hendrix
7. The Rolling Stones
8. The Who
9. AC/DC
10. David Bowie