In reply to SFrancis:
A few more from the SE peak:
http://peakbouldering.info is your friend alongside the Froggatt guide and
http://offwidth.uptosummit.com/guides.html
Matlock Bank....urban quarry but alongside New Mills Tor sometimes one of the few place climbable in the Peak in a dismal winter as its sheltered south facing sun trap.
Stanton Moor and Rowtor (for Stanton there is loads of stuff not in the guides), great pub for afters.
Rabbit Warren and Harland Edge.. good wild edge bouldering combo day
Quick, reliable bits and bobs...Clifftop, Cocking Tor, Alport Stone, Shining Cliff (and Eastwood... banned but OK if you are quiet)
And more conventionally Gardoms (esp. north and south ends), Baslow (Squarestone, Walnut, Eagle Stone Froggatt Edge (esp Pinnacle Boulders, Todys Playground, Hairpin) and Curbar Edge (Moon area, Little Quarry)
And famously Robin Hood Stride and Cratcliffe.