I'm in Glasgow. It's pretty cool. There's more going on in general than in Edinburgh for 11 months a year, give or take the world's largest Arts Festival.
Cinema-wise Glasgow has an annual Film Festival (in February), an IMAX and a couple of pretty good rep/arthouse Cinemas -
http://www.gft.org.uk has a regular Psychotronic Cinema night, which is pretty cool.
You also won't be left wanting for Bars, Clubs, Restaurants, Shops, Casinos etc. Whichever is your bag. There are several excellent music venues too. Certainly, there's more than enough going on to keep your attention away from the fact that it will almost certainly be raining when you visit.