It's hard not to listen to "The Spirit Carries On" without having a smile on your face by the end of the song.
The finale of "Finally Free" ( before the ending kills the mood) from Metropolis, pt 2.
"We'll meet again my friend...someday soon..."
"I Walk Beside You" has what are possibly the most inspirational lyrics in any Dream Theater album. The song conveys the message that no matter how bad a situation may be for you, there is always someone who wants to help you through it.