Roy, TP and thanks for the therapy

Charles Barkley + Larry Bird would be really fun, and he wouldn't go without a ring.
Kevin McHale + Kevin Garnett would be a force at the PF, as long as he didn't go against Russell Chamberlain or Hakeem O'Neal.
Sabonis + Ralph Sampson would be impressive also, specially if they were able to use their two combined healthy knees.
Dave Cowens + any seven footer would be impressive, and any combo of Monster HOF should be careful about any seven feet Cowens. That leads to the ultimate big combination:
Dave Cowens + Sheed!!! Ball don't lie! a 12 time AllStar and 3-4 MVP