1995 Saturn that will start great on a cold start but once warmed up will not crank unless holding gas pedal to the floor?

There can be a number of things going on when the engine quits or won't start when it's warm. One is a problem with the condenser related to the ignition points. Also, you should inspect the tightness of the fasteners since metal parts expand when they get hot. Another possible problem is that the ignition coil many need to be replaced.