Glad to see Spamalot getting A LOT of honourable mentions in the 'Funniest Song' and 'Funniest Musical' threads on this board - esp after all the stick it's got over awards etc.
For me, it's the fact that it made me laugh till I cried (and can still bring a smile to my face when listening to the soundtrack) that is most important. I remember waiting in the lobby to pick up tickets last September and remarking to my friend (both of us veterans of numerous West End shows) that I had never heard an audience having so much fun in my whole life. They were in complete hysterics and, a couple of days later, I could understand why! Not to take anything away from any other shows (DRS & The Producers were also fabulous), but Spamalot remains the funniest show I have ever seen.
* And, just for the record, I wasn't very familiar with the Python films and have never counted myself as a particular fan of them - and it didn't make a blind bit of difference to my enjoyment!
Seen some shows in my time....