Alter Bridge (the band) have posted one of their regular updates on myspace and they have included a few acoustic videos and going by the hallelujah one by Myles released a while ago they should be pretty cool!
Check em out:
https://www.youtube.com/watch?v=lfsM_XXLaQo - The song Blackbird from the album of the same name with Myles and Mark.
https://www.youtube.com/watch?v=sngxdo7hzoI - A new version of hallelujah by Myles.
Theres also a couple of others if you look in the related videos section on the right that are performed at the same place as the ones above.
Enjoy!
P.S. Its my 18th birthday tomorrow!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!