I love hearing people with an African accent speak English or French, and hearing people with a Japanese accent speak French.
My favorite dialect of English is probably Irish, like most of my family.
Oh, Russian speaking English is a good one too.
My dentist has a thick African-sounding accent. It's pretty tough to understand him, and my brain instantly jumps to conclusions and says "**** he barely knows english, he's gonna stab a hole in my mouth!" but he's a good dentist. Which isn't saying much because I despise the dentist.
I love irish accents, I really want to be able to have one haha.
French (sometimes) <-- some canadians have a cool accent
If you have a midwestern american accent, the canadian one is pretty easy to pull off. Just call everyone "Hosers" and talk about the "ohcky" game (Not "hockey"... more emphasis on the "o") oh and as always, (have a nice day. FPSRussia joke.) say things like "aboot"