Be VERY Careful about engaging in this. TV is a dangerous media if you don't know who and what your dealing with. Remember it's THEIR show, so they can make you look however they want through the miracles of editing. Make sure the show wants to promote a good image of magic before committing. I've seen a few places that look at magicians as cheap, bottom rung entertainment acts and frequently attempt to put them down.
With that being said, as to your effects I'd say go with what ever you can perform really well. I'd avoid pressure though. It's already been done recently on letterman and I highly doubt (no offense) that you're going to do it any better than that. Too soon.
While I agree that most effects that you buy, you purchase the performance rights to. But there are some exceptions. Those few exceptions are usually well known though, so I don't think you have much to worry about.
Is this a national TV show or a local one? This also would affect my choice in material, presentation, etc. I'd try to avoid anything already main stream, or anything done by Angel or Blaine. Same reasons as pressure, it's unlikely that you'll be able to hold a candle to them.
Way to go on the booking! Break a leg. I want a full report on how it went.
Now that I'm thinking about this, I'm going to consult one of my friends with the performance rights question. I'll post back what he advises.
Edited:
Just got off the skype with a friend of mine who works the TV end of show business. I figured if anyone would know the right answer to a media rights related question it would be someone who has experience producing media for magicians them self.
I asked my friend "Do you have the performance rights of an effect you buy (to do on say local tv) or do you have to get the writen consent of the effect's creator?" Which led to the following discussion.
My friend said: "no you have to get written or verbal consent from the creator. the legal right have to do with the allowance of who ever buys an effect to be able to perform it publicly as an artist, but when promoting ones self for the gain of pr in any media they must then get permission to use it becuase it represents anothers style and creative process and to not get permission can be adanger for the creator as they can then be grossly misrepresented by someone else. That is why us creators make that legal claim, to protect our creative and legal rights as creator and performer."
Now that begs the question to whether gray area items such as McDonalds Aces, or cards across is fair game since they are public domain (or overdone to the point of being so.) The answer is still a technical "yes". You should attempt to get permission, but it can be a nightmare trying to figure out who to contact as multiple companies sometimes produces the same effects. Case in point with McDonalds Aces. You'd still be best advised to at the least send an email to the authoring company whose effect you are using, and advise them of your intent to perform it. Offer them a chance to interject a complaint. Give them a chance to respond to you before you do something like move forward with the performance, but only in the case of public domain or gray area items that have multiple publishers. If the item is specific, like Pressure, unless you get the permission, DON'T perform it.
Performing in public is one thing, but going in front of a camera is a completely different animal. Proceed with care.