I've never come across a devotional i really liked, until I picked up Morning and Evening by Charles Spurgeon. Two devotionals a day, one for the morning, and one for the evening. Sermonettes for my soul.
I cheat though, they're both read in the morning. Confession time: because as beautiful as Spurgeon's words are about our Savior, they tend to put me to sleep at night.
Anyway, without fail Spurgeon spoke to my soul again this morning, with my prayer for the day (and what should be EVERY DAY).
"O Jesus, if Thou come not in person to Thy waiting Church this day, yet come in Spirit to my sighing heart, and make it sing for joy."
-C.S. Morning and Evening