Most of the greek resorts are a bit scummy (Kavos, Laganas, Faliraki, Malia, Kardamena). Generally because they know a load of p*ssed up 18-25's are going to turn up and blow a fortune no matter what the conditions as long as the drink is cheap, the weather is hot and the birds are easy.
I've been to all the above (although not all with the lads) and I'd reccommend Laganas as the best. Although if you want clubbing in it's most literal sense then you have to go to Ibiza. I've never been but my wife went twice and said it was excellent. If you just want to get p*ssed and shag birds then any of the major resorts in the Med will do.
I feel a poll coming on. Where's best??
Ibiza
Magaluf (Majorca)
Playa de las Americas (Tenerife)
Kavos (Corfu)
Malia (Crete)
Laganas (Zante)
Kardamena (Kos)
Faliraki (Rhodes)
Ayia Napa (Cyprus)
Any other?