I love Guaba Beach by Roger Shah, it makes me feel as if I'm surfing, something I have never seemed to be able to pursue (yet). I started the video at 55 seconds, the intro is annoying: http://youtu.be/mmFWfrWWkl8?t=55s
And Melody From Heaven by Contacreast: http://www.youtube.com/watch?v=eTHjM6P2DaE
They are both trance melodies.
For a complete switch, I love old hymns like, "There is a Fountain Filled With Blood": http://youtu.be/haHhnObD8IY
Thank you for the great question, got me thinking about the things I love!