This never gets old. I live in Mass and timed a few vacations around Shuttle launches.
I've had the pleasure of seeing two day time and two night time launches. I don't think you can ever get the full appreciation of this experience until you see it live and feel the thrust reverberating through the air. Exhilarating.
The stunning part is when you walk back to your car (once it's out of eye site < 5minutes) and turn on the NASA channel and find out the Shuttle 5k miles down range approaching the African Coast.
Amazing.