ElectronMan

I was idling in traffic today about 5 minutes away from home. I had been sitting there for a few minutes and I was watching my temp needle. Out of no where it jumps up to about 3/4 of the way and immediately falls back down. Traffic starts moving again, but it keeps bouncing up and down. When I pull it in the garage the temp needle is slightly above where it normally sits. And my notice my air/fuel gauge is going nuts. Every light on it is lit up. Any thoughts? I'm gonna try to log it.