hosts and sits down with an old friend, lisa kudrow. >> i was doing a hollywood reporter interview a couple of weeks ago or like a month ago, it was hey, i hope i get nominated for an emmy interviews. it did not work, but i still had to do the interview. i found myself reminiscing about how much fun the show was, and the hours that we worked, and how much -- you could see how much we laughed and everything. if i had a time machine, i would like to go back to 2004 and not have stopped, you know? >> yeah. >> so just assuming for a second that time machines are around, would you get in a time machine and have stopped? would you want to change that? >> yeah. i mean, if it were up to us, you know, like individually. then yeah. >> you would have kept going or stopped? >> i would keep going. >> yeah. >> that's matthew perry, guest hosting tomorrow night. and anderson cooper starts right now.