Agree on nukes. It'd take an act of god to make them vanish, but hey one can hope.
Coal power... eh, yeah it would be good to be rid of it. Propose an alternative.
IC engine. Nope; current alternatives either just aren't good enough, or require billions in infrastructure before being usable. Besides, even if you use electricity of hydrogen - well, you have to generate that power somewhere. In a plant. Which will likely use coal or gasoline.
Incandescent lights. Propose an existant, valid alternative - everyone can imagine some future technology.
Land mines. Hell yeah. Most stupid weapons after nukes.
Manned spaceflight. Weeell, I reckon this is more a case of postponing it. With current tech, manned spaceflight isn't worth the risk and expense (even factoring in the species-wide ego boost we get from it

).
Prisons. Yeah, OK, imprisonment doesn't really work for rehabilitation. Propose an alternative (and no, preventing them from driving isn't an alternative).
Cosmetic implants. Dude, don't like them, don't use them; they are
cosmetic. No point in wishing them to disappear. Besides, growing flesh isn't currently feasible. Again, anyone can imagine a future tech...
Lie detectors. Agree; they are inaccurate, but if they worked it would be even worse. The privacy of one's thoughts should be absolute.
DVDs. Again, propose an alternative.
Overall, I don't agree on a lot of points, mainly because he fails to provide a viable alternative. I can name not only 10, but 100 things that don't work as I'd like them to, but unless I have a better idea, it's pretty pointless.
Here's what I'd like to put to sleep - limiting myself to stuff on which I can make an informed comment:
Floppy disks (give me a more flexible CDR format and filesystem instead).
IPv4 (address space is coming to an end; switch to IPv6).