I agree with Beagle here, while it is important for a pilot to be familier with all aspects of handling the aircraft they fly there is is little reason for psuhing the envelope to the limit. Power on stalls to the warner or buffet make sense but not really full developed?
On frequent occassions I have full power stalled my 152's and excercise has a number of times ended up in a spin. Fun but I think for the unwary it could be a problem especially with spinning not being taught as part of the PPL anymore.
Personally I love spinning my aircraft for the entertainment value but prefer to do it intentionally so I can tie things down first!!