I recently acquired an Illusionist deck that comes with a double-back.
Do you have any favorite or interesting effects with a DB?

All Backs. Most versions are awful, but a DB can help mitigate the junkiness.

Paul Curry's Turn of the Century is an underused magician fooler. Weber has some great work on the concept, too.

A double back allows you to do a very convincing ambitious card.

I was confused, then I realized I was unclear!

The DB is blue/red. Standard looking Blue Bike deck.

Tattoo You- Bannon

If you have my book, Tesseract, check out "Triple Whammy." I think you'll find that the double backer really gets a lot of secret work done which leads to a very strong ending.

Also, I believe there's a booklet devoted to uses for double backers. I forget the title?? I'm sure someone will recall it and post.

Mike

Triple Double by Jeremy Luton is available.

https://www.penguinmagic.com/p/1944

And Splash of Color...

https://www.penguinmagic.com/p/1958

Dan Harlan has an entire DVD devoted to effects with a red/blue double backer.

https://www.penguinmagic.com/p/2538

A favorite trick of mine is Blues Sisters (I learned it from Simon Lovell but don't know if it is his trick) and it uses this gaff as well.

Muldoon Match by Paul Gordon

Color-Changing Deck, Giobbi

I love Match and Mix by JK Hartman. He says it's based on something by Boris Wild, but I don't recall what effect. It's in Card Dodgery, and I believe is the only effect in there with a double back. However, the whole book is great, so there's lots more to enjoy there as well.

Dan Harlan's Little R&b has a lot of good ones.

I also vote for Tattoo You.Great trick.

One Trick Two Names from Jon Allen's dvd set Connection.
Excellent effect utilizing the R/B double backer.

Thanks for the tips. I've been messing about with a few with great results (Tattoo You especially).
The DB is such a nonintuitive gaffe it's inexplicable.

Super easy card to wallet.

Any chance you would synopsisize "One Trick, Two Names"?

From the onset a Red backed card is placed on the table with the magician's signature on back of card.

Spectator picks a card from a blue deck and signs their name on the face of the blue backed card.

The two cards are picked up by Magi comparing the signature styles and what personality traits the signatures may reveal.

The spectator's blue card is placed back in the blue deck. With a magical gesture the spectator's card vanished from the deck only to be revealed on the face of the Magi's red backed signed card that was sitting on the table from the beginning.

Great effect in so many ways. Jon Allen will tell you that " Spectators Don't Exist"

Really simple but effective: "Transposition Extraordinary" on page 119 of the Encyclopedia.

I posted this on the Perverse Magic thread of the Genii Forum on January 7, 2004 (and it appears on page 27 0f the book Gerald Deutsch's Perverse Magic).

This is a routine is a great example of " Perverse Magic".

It is credited to Dai Vernon and was published in "Hugard's Magic Monthly" in June 1949 and it appears on page 459 of "Expert Card Technique". I use Jerry Mentzer's opening that appears in "Card Cavalcade Four" and finally, it was Jonathan Townsend that gave me the suggestion of using the one hand top palm to end the routine as a visible change of a back to a face. (Jonathan suggested this to me in June of 1985. It is used in "Inversion" which I found in Mike Ammar's book published, I believe in 1991.) (Also see my thoughts on Inversion above.)

Effect and Patter

I do the routine when someone hands me a deck of cards and in front of a group of people, asks me to do a trick. The reason is that this way they know it's not my own double back deck.

I riffle the deck and ask a spectator to say "stop" and when she does I lift the right hand portion to show the face of the bottom card of the top half to the spectator. Her bewildered look puzzles me and I curiously turn the packet to face me and I'm surprised to see a back instead of the face. I look through the deck and see only backs.

I say that this must be one of those trick decks you by in a magic store as I keep showing backs. Then I remark that I read that by squeezing the deck you can get the faces and I do squeeze the deck and I'm surprised when the top back card visibly changes to a face card.

Gerald, I am having trouble understanding how this would work with a red/blue. Seems to me it would advertise that you have added something of your own.

I could see it working with a red/red if someone approached you with a red Bike Deck. Similarly for a blue/blue. But I am not even sure you would need a DB, right? Couldn't you palm off the top, flip the rest of the deck over, and then replace the top card before you commence your riffle? That way, you wouldn't have to rely on the spectator volunteering a Bicycle deck.