When Ross and Elizabeth plan a romantic rendezvous at her fathers country cabin they didn't envisage Paul (Her Father) would return for a similar experience with Rachael. The whole thing plays out rather well and makes for some pretty humourous circumstances, especially considering Ross is forbidden from seeing her in any way, shape or form. Cut to Ross hiding in a multitude of predicatble places such as under the bed.
This episode is probably most famous for Paul (Bruce Willis) making an absolute fool of himself in front of the mirror. Psyching himself up for a little romance he proceeds to tense his muscles and chant "i'm just a love machine" all of which is witnessed by Ross who uses this as a bargaining tool in the fight to date his daughter. Bruce plays the part superbly well and will go down as one of the most memroable guest stars the Friends saga has to offer.
Meanwhile Monica books a venue for her and Chandlers future wedding without his consent, he predictably finds out via a cancellation message and proceeds to freak out in his usual over-the-top manner. However what Monica and the audience are unaware of is his secret plans to propose, this is revealed in a conversation with Phoebe in the closing moments of the show. While this episode is Ross-centric it does become over-shadowed by this huge cliffhanger and pushes the series in a rather unexpected direction. Take out this dramatic revelation and this would stand as nothing more than a filler, an enjoyable filler with some great comedic value but a filler none-the-less.