I don't agree with everything George Lamsa wrote, but he seems like a knowledgeable source. He published a translation of the Bible from the Peshitta (Aramaic version) though I have not purchased this yet.

Another author who I want to look into more is Rocco Errico, who has written a few books with a similar approach.

I have personally found the works of Neil Douglas-Klotz to be very illuminating in the area of approaching the teachings of Jesus from the Aramaic -- especially The Hidden Gospel, which I've quoted from a few times in my journal:

http://www.livejournal.com/talkread.bml?journal=sophiaserpentia&itemid=340

http://www.livejournal.com/talkread.bml?journal=sophiaserpentia&itemid=14451

http://www.livejournal.com/talkread.bml?journal=sophiaserpentia&itemid=26967

http://www.livejournal.com/talkread.bml?journal=nonduality&itemid=49316