Got this link from CG Talk. Tutorial is not related to Blender, but a lot of the techniques are very relevant and can be applied in Blender. Hope you all find this informative and useful, as I have.
http://www.zivcg.com/uvtutorial.html
BgDM
Very cool! Thanks for sharing this rare discovery.
I always wondered why is UV mapping was such a taboo in tutorials… until I tried myself for the first time 
Cheers!
TW
I saw this over at CGtalk and it’s cool. But I already have a great LSCM method for UV mapping in Blender. Check out the LSCM tips from Greybeard. Greybeard’s methods work great on any object that you have to unwrap. And the LSCM results are clean and neat and eliminate the need for great amounts of tweaking of uv’s.
Blenders LSCM let’s you do some powerful stuff like the work shown in this thread in which the artist makes use of Blender’s LSCM feature:
JA-forreal: LSCM is indeed a great tool set. No question there. I use it all the time now. Just thought that this one would be some help in some other areas that people may not be familiar with.
BgDM
Yeah, sometimes you have to take a look at other software to better understand how to do something in Blender. Then you really start to see how Blenders approach can work for you in performing a similar task like uv mapping.
Blend on!
nice tutorial although with the LSCM and the UV-Export script it’s very easy to get a texture on your model (although getting a good diffuse map is an artistical problem ^_^).
Ever since I read a tip on using the Reflection channel in Blender for diffuse mapping, I seem to get ok diffuse on my textured models. I often use a noise map as a diffuse map on many of my objects. For custom placed diffuse effect maps you have to plan out your map. You can use the texture painting feature to draw maps interactively, then tweak them in Gimp or Photoshop.
Blend on!
I couldn’t figure LSCM if my life dependet on it, not very user friendly(Ok haven’t practiced much)…I like UVMapper, easy to and the price is right(free)…
Watch greybeard’s tut on LCSM and you will see how easy it is 
Like =KH=Lupus stated, do that. Don’t approach LSCM mapping from the standpoint of what you can do with it. Approach it from the standpoint of what it can do for you. LSCM wrapping is designed to do the unwrapping for you. All you have to do is mark the seams that you want the LSCM feature to unwrap, and then sit back and watch it work. It’s as simple as that.
You will feel funny because you used to have to slave over uv mapping with tools like UVMapper. Now you can just mark seams and unwrap, then tweak out your uv’s. LSCM mapping in complex mapping cases can take hours off of your normal uv mapping tasks.