I was checking my mail, received a PDF file which my company issues to everyone. It wasn't a malicious PDF file, because I was reading 3 other PDF files before that.
While I was reading the PDF the screen dissolved, matrix style then went black. Not a sudden black screen, but a dissolved transition. Then the phone went dead. Tried the HOME button and POWER button reset for 10 seconds, then 30 seconds, then 1 minute. Nothing. Tried the power button hold for 10 seconds, then 30, then 1 minute, still nothing.
I plugged it into iTunes, synced my phone then it started vibrating non stop. I repeated the soft/hard reset again sequence again and nothing.
After letting the battery die out as it was vibrating, I plugged it the next morning and viiiibrating. I've decided to just bring it back to the Apple store when I get a free day.
Since Apple likes to duplicate the issue, all they have to do is plug it in and watch it dance on the counter. Will make sure there are other people watching too so they know what's up.
UPDATE: battery is 100% dead and won't recharge, every time I try and plug it in it will vibrate, let it on for 4 hours to test if it recharged. NOPE.
Also when I mentioned that it was a PDF i was viewing, it sounds like other people are experiencing the same screen crash/vibrating/dead battery issue when playing games, checking text messages.