What sound or action do you have set in your cell as the wake up alarm?
I like to wake up to music. I most frequently use “Ain’t No Rest For the Wicked” by Cage the Elephant. Seemed appropriate, and I like the song. Second most frequent choice is “Alleluia” by Josh Garrels.
One of the defaults.
“Through the Fire and Flames” - Dragonforce
For a very long time now, it’s been a snippet from the theme song to FX’s short-lived Terriers, “Gunfight Epiphany”. I used to also have a bit from “Doctorin’ the TARDIS” that I picked up when I was actually looking for a decent, clean TARDIS arrival/departure sound for text messages, but I seem to have lost that one in recent computer moves.
I was in the Navy, where I learned to sleep through just about anything, but the GQ alarm will pull me out of the deepest slumber.
Reveille.
ROFLMAO
I have that as an alarm sound - mrAru spent 20 years in the sub fleet. He pretty much teleports out of bed wide awake 
this 688 class power plant alarm is my phone ring for him. Usually turns heads if I am on base and he calls me 
My dad, who spent 30 years in the army … poor man retired and what happens? There is a summer camp opened slightly down the lake shore from our summer house. What do they do? 6 am every morning they broadcast reville over the camp loudspeakers…though we never minded taps at night.
The opening theme from Doctor Who, the Tom Baker episodes (4th Doctor)
My wake-up alarm has this gentle wake feature that plays new-agey nature sounds starting 5 minutes before the set time. It’s usually plenty to get me up before the real alarm with a sort of Enterprise red alert WHOOP! WHOOP! sound starts in.
When I use my phone as an alarm clock (generally when I’m at a hotel or somewhere else without a reliable alarm clock), I wake up to Ke$ha’s “TiK ToK.” “Wake up in the morning feeling like P. Diddy…” Awesome.
Default banjo music from VErizon
The most annoying alarm that it came with. Music is what I go to sleep to - it won’t wake me up.
“Imagining”, by GTR, a mid-1980s “supergroup” which was led by ex-Yes guitarist Steve Howe, and ex-Genesis guitarist Steve Hackett. I use it because it starts out fairly quiet, which means it’s not a terribly jarring alarm sound – at least if I catch it within the first 90 seconds. 
The Game of Thrones theme, every morning is epic.