I would say this is one of the best endings of an episode in friends.
I admit that I'm pleased tag isn't the father and I'm thrilled ross is, as it leads to many good written episodes after. It was rather funny when phoebe and joey misunderstood the signs which lead to many surpises.
When Chandler and ross lost the cameras, It was obvious it would lead to disaster when they tried to 'recreate' the moving wedding scene.
Once again monica shows her obsessive side when she has to wait for chandler to open the wedding presents with her but goes out of control when she opens them all her self!
A brilliant episode.