Tonight while driving around town I noticed the temp gauge was the hottest it's ever been, at around 170-180 degrees. Prior to tonight it's never been past 160 degrees. So I finally get home and open up the hood to see if I have a coolant leak or anything. While looking around I noticed I'm getting oil seeping from between the driver side head and block. Not much, and I can't find much else, but I've never found this before. It still seems to run fine. No bad sounds, oil pressure is good at around 80 psi. Anyways, I've been getting on her pretty hard lately with the but not enough that I would've thought I'd harm it. So, is this oil seeping between the head/block normal, or do I have bigger issues waiting to turn up?

Thanks.