I guess I don't really care so much about the death of the CD as a way of absorbing music. They're shiny and bendable and were really cool in that Dolph Lundgren movie about an intergalactic drug-running alien (get used to obscure crappy movie references). But they always seemed kind of '80s retro-futuristic to me... and does anyone have a CD from 6+ months ago that isn't scratched?
What I do miss are those hidden tracks that some bands and engineers include on CDs. They ranged from stupid and obscene ("Ode to Tipper Gore" on Warrant's Cherry Pie) to clever (They Might Be Giant's "Token Back to Brooklyn" on Factory Showroom). Most frequent are the hidden tracks at the end of CDs after 6 minutes of silence (Nirvana's "Endless Nameless" on Nevermind starts after 10 minutes) and some start after a bunch of short silent tracks (Nine Inch Nails' Broken EP had two secret songs on tracks 98 and 99). And some were only found by rewinding into negative time on certain tracks (the aforementioned TMBG tune starts about 40 seconds of negative time before the album opener - also referred to as "pregap.").
There are even hidden tracks on vinyl (an inner groove secret untitled track at the end of Side B of The Beatles' UK version of Sgt Pepper's). But with the rise of the MP3 over the past 20 years, really great hidden tracks have been harder to find.
This playlist consists of bands who have used hidden tracks in the past, though these aren't hidden tracks themselves. I'll leave it up to you to go dig out your old CD jackets and find some for yourself. I just hope they aren't scratched after that albino alien shoots them through your neck.