Cancer-free, stink-free, fiery-death-free cigarettes.
Failing that, cheap, cruelty-free replacement organs.
The ability to download myself into either a replacement body, or a machine form that I may use until I grow weary of life.
A way of having your brain communicate directly with a computer. Seriously. I want this for purely selfish reasons - it’s surprisingly difficult to get the words I’m thinking down on paper as I’m also falling asleep. And then I still have to type them up.
Continuing on this theme, I want a video-out jack on my head so that I can record the images inside. A sketchbook only sort of works.
Actually, it should include audio, smell, touch, taste, and emotion as well, so a superset of HDMI might be called for. But I promise not to think in DRM.
- Infinite storage capacity (I want to download my brain)
- the return of B&W TV (I love film noir)
- the return of fedoras and double-breasted suits
- recreated 'roaring 20’s) (2020’s, that is)
Trees.
Full-immersion VR, so when I get too old to move around and do things outside, I can retire to my fantasy world and live out the remainder of my days Matrix-style. 
If people are going to persist in using fertility drugs, then we need fertility drugs that won’t result in the conception of quintuplets and sextuplets and septuplets. One technology needs to catch up with the other one.
I hope to have mail delivery and newspapers and farmers’ markets. Baseball and libraries.
At least some of the heritage buildings we have today – there’s no telling whether they’ll go due to developers, quakes or fires, but I hope a fair number remain. I’d go with the libraries suggestion, too. I’d hate to think how I’d get on without a library to go to so I can lose myself in other worlds and times.
- Libraries
- World peace.
- Flying cars!
- Some way for me to see 20/20 without corrective lenses. Proper depth perception would be nice, too.
- Championship-winning sports teams from Philadelphia.
5a. A headline announcing that the Phillies have won World Series. - Efficient cures for all diseases.
Jetpacks!
Oh, and I suppose Flying Cars.
Glass bottom aeroplanes.
Cures for cancer, Alzheimer’s, osteoarthritis, and anything else I might get.
Non-surgical (or at least minimally invasive) vison correction. Let’s say up to 20/10, as long as I’m wishing.
A cure for tinnitus, and a male birth-control pill.
Widespread nuclear energy, or solar energy if that technology improves. Plug-in hybrid cars, and possibly computer-driven cars or better mass transit so you can do something other than drive during your commute. They should at least make cars that can drive during certain conditions, such as bumper-to bumper traffic.
Pie-in-the sky:
A space elevator, nuclear Orion ships or other advanced exotic space travel methods.
Some way of extending Moore’s law beyond the limits of conventional two-dimensional silicon chips.
- people kibble that is nutritious and delicious
- vat-grown meat so we can all enjoy meaty goodness without worrying about baby cow eyes looking at us
- dental procedures a few steps away from the barbaric stab your mouth with needles and then grind your problems out with a drill. I mean, seriously, this is the best we can do in 2008?
I want Matrix-style VR for when my body wears out, too. Heck, I’d like it now, but I’d never get anything done.
Hmmm; a lot of what I can think of has already been mentioned.
Full immersion VR.
Downloading into an artificial body.
Mind/computer direct links.
FTL travel.
Friendly extraterrestrials.
Human level or higher AI.
Space elevators.
Full, or nearly full automation of the economy.
“Desktop factories”, aka replicators.
Excellent high-speed intercity rail in the Quebec City-Windsor corridor and a Montreal metro and rail-based transit network at least half-again as extensive as today.
An NDP majority federal government.
A new 520 bridge across Puget Sound. I don’t fancy taking a bath one fine morning commute. That thar water’s cold and I’m no polar bear or Nordic type despite where I live. 
A lot of other suggestions have already been made.
Widespread acceptance of homosexuality. Maybe even letting them get married. :eek:
Writing letters by hand. I really don’t want this to become extinct.
holodecks
personal jetpacks
direct brain to google/wikipedia interface
and… trees
seriously, one Queens county is enough
how about development that means improving what’s already here rather than cutting down forests to make room for more of the same crappy stuff