My routines are usually something I keep close to the chest, but since I don't do this professionally any more I guess I can share.
My original motivation was to do an ACR that didn't use any of the common moves. I wrote this when I was still really new in magic, and while I have since changed the scripting significantly, and cut out some of it, this is the way I used to do it:
Riffle up the deck, volunteer calls stop. Taking the full top packet, I show the bottom card and ask the audience to remember it.
Side steal as I put the packets back together.
Ask them to imagine the card sitting, face up, on the top of the deck. It should look something like, this (wave the hand, deposit the card face up - essentially a "Window Change")
Flip the card over face down
Second deal, place that card at the bottom of the deck. Spread the cards to show it's really on the bottom, square up.
Flip over top card to reveal it's jumped back to the top. "Let's see that again, it was too quick."
Second deal, place card at the very bottom, spread to show, square up and show top card.
"That's still too fast. I'll let you see what's going on."
Flip the top card over, face up, to the bottom of the deck (Basically, card is face down at the top of the deck, I reach up with my index finger and pull it around to the bottom of the deck, face up)
I do a slow rise here - it's a combination of "Schwfity" "Uzumaki" and "The Graduate". In short, with a little shake of the deck the card moves up about 1/3 of the deck. Spread to show the rise, repeat. It melts all the way to the top.
Hand them the card to inspect and sign. (Ditch all but one card while they do that)
Take the card back, Do a very ballsy Tilt, pause, click the cards back and forth to show the deck has vanished except the signed selection.
In the display of the card, I use the same steal as the Bertram Change to clean up, hand them the signed card.
If I want, I use a gambler's cop and some misdirection to make the deck appear again, but usually I wouldn't.
When I first started I used Card To Mouth as well, but since so many people use that I stopped.
I also would use the deck vanish to either turn the deck into a block of glass, or plates of steel, depending on my mood. The steel was a "Pass Trainer" - I liked that because I could build it up a lot by having everyone put their hands out to catch it, and it was so loud it drew a LOT of attention from people nearby. Good for busking.