Should We Hurry And See Our Favorite Bands?

With Don Henley's announcement that the Eagles are done I started to panic a little. We lost Bowie, Lemmy, Brian Johnson's done.  Who's next?  It's inevitable, I know, that they'll all be gone and we'll be left with tribute bands.  So, should we make it a point to try and see some of the greats before they stop?  Or worse?  I just saw the Stones and Seger last year so I got those of the way so here's my Top 5 "must see before it's too late" bands.

1. Paul McCartney

2. The Who

3. Springsteen

4. Clapton

5. Steely Dan

I've see all but McCartney before.  Who are your Top 5 must see bands?