[mr0077]

Khansmith, IMHO Excaliber's method is the only one that will work without removing the clutch cover...but I would suggest a small modification that worked very well for me, broke it loose in less than half a block: start it in first gear (with clear room in front, of course!), get it rolling and short shift into second gear (obviously, without a clutch), THEN nail it with the clutch pedal in. Notice you will need three feet for this operation. That will put more torque on the disc as mentioned above, and break it loose fairly quickly...just get a spotter and pick the "right" time :-)
Let us know how it goes.