I speak generic Northern-Californian English, although with a few peculiarities (which my friends like to point out and make fun of, on occasion). I'm not really sure where they come from, my mom's a native Iowan, so they may well have come from her. Some of the noticeable things I say:
Awesome: I tend to get a lot of crap for this one, mostly because I tend to front the ɑ so it sounds closer to an a or æ. In IPA:
I say a'səm vs most Californian ɑ'sʌm.
There's also Peninsula, which some of you may remember me starting a thread on a few years back.
I say: pɛ'nɪn'sju'lə
Most say: pə'nɪn'sə'lə (or even pə'nɪn'slə
So there's that. Additionally my Spanish is a bit weird. Kind of a mix between Iberian and Argentinian Spanish. (I have the ʒ in ll words, as in ella [eʒa], but I also do the Iberian lisp and I clip on a lot of words).
I think with German I think I have a bit of a Bavarian accent owing to the fact that for the first 17 years of my life the only German I ever heard was from my Mom and she speaks the München variant fluently.