I've visited many shops that show critical metrics and other dashboardy stuff on a TV. I need to build one and I can think of many different ways, both for the hardware and the actual "thing" it's rendering. I'm sure someone has done a sexier job than me..<p>What did you end up building? Bonus points for something shared on GitHub.
I'd probably just search around for information dashboards; there are a ton of solutions, including canned ones. There are some commercial ones if you like spending money.<p>Lately I'm mostly using D3, but that's a steep curve if you just want a bargraph or something.