When we started the show [Lonesome Dove], Suzanne De Passe - who had done the original miniseries and still owned the property and was turning it into this series - she brought in a lot of old friends - Diahann Carroll and Billy Dee Williams and Dennis Weaver. And we had an interesting collection off the top of these old seasoned actors. Billy Dee was lovely and iconic.

Every actor has periods of their life that are a little less busy than others, and that was just a time when I needed that. And to be back on a sitcom stage, with Julia [ Louis-Dreyfus], was really, really fun.

I'm doing a very funny show in which we talk about issues. I speak at Aids charities and things. It's great to do something fun with our days and yet we're told we're doing something important.

I think there's a certain objectivity that comes from being Canadian. You're partly British and partly American; you have a good bird's-eye view of both countries. So much of the comedy that comes out of Canada is impersonation - it's less 'look at me' than it is 'look at me playing other people.

Whenever I see Tom [ Cavanagh] - we're good friends - we just mourn that we didn't get a longer shot.

[Townies] was a great springboard, obviously, because Jenna [Elfman] went from that to Dharma & Greg, and a few years later, Lauren [Graham] went to Gilmore Girls.

I think we all realize that anyone can - and has - gotten AIDS. So there's obviously still a lot to be done.