My favorite pieces are-
Bethovens 9th - Ode to Joy Possibly the greatest ever compostion IMHO
Songs played at our wedding are also right up there:
Pachebel Canon (sp?) - This music almost makes me cry whenever I hear it. I was fine at the wedding until I heard the orchestra starting it for my cue to enter the church.
Trumpet Voluntary - Jerrimiah Clarke (sp?) - Not as much of a favorite as Canon, but a fine piece nevertheless.
There are several more of course, but these are the ones that come to mind. Anyone else?