It's all about the groove

Seriously, though.  If you can't keep TIME through that amazing fill,  what use will it be (other than to simply show off)?

Remember,  the band are relying on we drummers to keep it in the pocket.  That's what Ringo was all about.  With such a solid player behind them, the rest of the Beatles were able to concentrate on their own contribution.

Beginning Drums - Essential Grooves, Beats, & Fills DVD.
Drum Lesson: Coordination and Groove Learn how to play intermediate to advanced drums instructional drum lessons video
Tommy Igoe Groove Essentials
Drum Lessons: Extreme Drum Set Techniques. Essential drum grooves, fills, dynamics and more