Ok, so the rest of the net seems to be working, but in the past few days I've either experienced or received direct reports of recurrent hour length outages of Gmail and Calendar.
I've not received any direct reports of problems with Google Apps or Search. I'm writing this on Blogger, so it also appears to be operational!
I have hard drives fail on my desktop machines every 6 months or so, so it's not like my desktop environments are rock solid. Drive failure are so painful that, even including ISP related network failures and personal LAN issues, my Google Gmail is still somewhat more reliable than my desktop email products. (Of course drive failure can knock out a machine used to access Gmail, but I have multiple access options.)
So, on balance, Gmail probably still squeaks by on average downtime compared to my desktop apps. This ain't good though. I wonder if it's going to merit a blog posting.