How to pass five hours in Birmingham airport?

My flight was cancelled, so I'm sitting around here until two o'clock. Or I suppose I could go out to Birmingham and see the sights - unlike "Nottingham" airport, the city's only ten minutes away on the train. That sounds like a better plan, actually, now I come to think of it. Ignore my whining, everyone, and if you're going to be in Heilbronn, I'll see you when I eventually arrive!

PS It's raining, too. My life is full of things to whine about.