All I remember is that it is Jesse's birthday and Xander buys some... soda, I don't know and a cake (or something or another like that)and then he sits under this tree and starts reminiscing to Jesse (well... not really, 'cause Jesse's dead, but you know what I mean) about how Willow turned into this super strong witch and buffy and Spike (who wasn't there when Jesse was still alive. and I think something like this is mentioned...) and about how much he misses Jesse. All the while Spike is watching/listening to Xander and gets a whole new insight on Xander.
Ring any bells?? thanks =)