What two luxery items would you want? Assuming basic shelter, food and water needs are met. Would you want makeup, books, clothing, blowup sheep?
Wait, what? Clothing is a luxury now? I’d assume the weather’s pretty good then. In that case I’d take a book and a nice girl. I’m not sure which, though.
Though it would probably turn me into a crazy person, I’d want my TV, DVD and movies.
Good luck plugging those in 
Pens and paper
If you’re stranded, there’s no one to gawk at your flabby self, therefore clothing is a luxury!
A hot man, and lots and lots of birth control pills.
A GPS and a fully charged satelite phone.
I’m getting off that fucker… 
A set of encyclopedias and the complete Sandman series by Neil Gaiman.
Books and Pierce Brosnan.
Don’t bother trying to rescue me. 
A working internet link.
(Uh, that includes the computer to run it.)
Oh, you mean it has to be realistic?
The Idiot’s Guide to Boat Building
Ginger and Mary Ann.
Yes, my feelings exactly:
A holodeck.
If it has to be realistic, I’ll take a Luxury Yacht and Jessica Alba. Luxury Yachts come with Navigation Systems and I shouldn’t really have to explain Jessica Alba to anyone.
Dunno; I think I could be happy for quite a long time if just the food/water/shelter/sanitation things were covered, assuming that the island wasn’t really, really tiny. Maybe I’d have a piano and some books that would get me started playing it.
Of course, Jessica Alba too comes with a navagation system.
I guess I’d want a gun and a drop safe with which to protect my valuables from random vandals and visigoths.
Was that funny? I’m too tired to tell. Perhaps I should go to bed soon.
If I had the conch and Piggy’s glasses, I’d be set.
A really good quality telescope so I could look at the stars and planets.
Solar powered or automatic watch.
Pain killers in case I fell sick or needed to remove one of my teeth (hey I’ve seen Cast Away and that tooth bit made my skin crawl)
A basic still
Good quality knife
Metal Match
Angelina Jolie
Body Paint
If I had those I’d not be too bothered about a phone or GPS.