I just came across an amazing archive!!
Here is an awesome collection of varied English accents from all over the world. It includes a free, online archive of primary source dialect and accent recordings, literally from four corners of the world (including both native and non-native speakers of English).

Even you can submit your own sample (regional English accent) to this archive.

I just listened to some of the typical variations of common English accent (of which I am aware!) from certain parts of the world. Honestly, as per my experience with real people from those countries and regions, I must say that the sample recordings here are nearly 90% accurate.

So, just browse down to your chosen country and keep listening to the samples. Hope you enjoy it!!

http://web.ku.edu/~idea/index.htm
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Well, all I was searching for was some resource on my favorite Yorkshire Accent. Is there anyone here who can give me a lead on that?

Watch (if accessible) this video clip. So cute and <em>fonny</em>...isn't she? ^^
http://www.youtube.com/watch?v=sB3ieNhEsDY&feature=player_embedded