Get the "Thumper Sport Massager"         Its REALLLY good..     I think you can get it at walmart for cheap. I paid a little more online..  $139.      It does remove a lot of muscle soreness and pain. 

Heres  a random video:   http://www.youtube.com/watch?v=abQ6kRhREWM&feature=related

I just used it after before my run, and had the best run in about 6 years.. :)  loosened my hip right up..   Got the stiffness out.

Very cool, ZAP - anything that helps.

I've been using it every night in bed. I've notice a big difference.  My flexibility was instantly improved as well. I wish I got it months ago.
My main issue was my groin.  I thought I had a "abductor strain"  it looks like it was just knotted or very tight.  This fixed my groin the first time I used it.