greatest sitcom characters of all time. >> he's terrified. >> once a bum always a bum. >> i know tony got a good chance. >> want to bet? >> well, the friendship they had in "taxi" was what going to get them through. that's what made it all okay. >> there is only one person you can trust. >> i do trust you. >> not me, damn it. >> on that show people from completely different backgrounds created a dysfunctional family and that to me is always so exciting for comedy because you get to bounce those people off of each other. >> and now, here he's arlene. much like "taxi," a staff of working people who are doing their best and not always the best is coming from it.