I highly recommend this book by Nehemia Gordon (click on the recommended widget to the right to purchase). As a Karaite Hackam and Hebrew scholar he is very impressive in his willingness to study Christian texts to provide new insights into Yeshua the Jew. I think this lecture is also excellent and hope everyone will take the time to watch it. Nehemia has several books out and each is well worth the price.
Introductory Video
http://video.google.com/videoplay?docid=2662031810327980639
Silver Trumpets 