I was wondering if anyone knows a good site that compares & shows how various Turkic dialects, such as Azeri, Turkmen, Ozbek etc, differ from each other & modern Turkish. Particularly the grammar.

I came across a few sites that focus on one of the dialects, but nothing of the sort that gives a comparative analysis. It is also hard to find online language courses that focus on Turkic dialects other than modern Turkish.

Any suggestions would be appreciated. Cheers.

Türkler için Özbekçe (Uzbek for Turks)

It looks like that it takes time to learn the vocabulary which is a bit different, but the grammar is quite easy to learn, but still it's quite understandable for a turkish,

Listen to this uzbeq singer,
http://www.youtube.com/watch?v=Rpy5YyYMKSA
http://www.youtube.com/watch?v=oed-kx7JzVQ&feature=related
http://www.youtube.com/watch?v=HL5b9poRwV4&feature=related

TRT has podcasts in just about every Turkic language:

http://www.trt.net.tr/wwwtrt/podcasting.aspx?dil=15

You can see on the right a lot of other languages, such as Azerbaycan, Kyrgyz, Uzbek, Tatar, Turkmen.

Personally I like the sound of Kyrgyz the most of all besides Turkish (the only one I really understand).

Thank you very much for the links.

I advise you to listen to Şebnem Ferah's song Gel Ey Seher.
It's a duet of Şebo with an Azerbaijani singer.The man sings in the Azerbaijani dialect.