Ok, well this is the mix I normally use for my commute to work, (note OP and ED indicate the normal meanings I haven't looked up the track name and it's in Kanji on my iPod which is on a library which is on a different system to the one I'm posting from

) :
My-Pace Daiou (Genshiken)
Tears Infection (Myself Yourself)
OP (Ah My Buddha)
Motteke! Sailor-Fuku (Lucky Star)
The Palm of a Tiny Hand (Clannad)
Kawaranai Mono (The Girl Who Leapt Through Time)
I Do (Ghost in the Shell SAC)
Sayonara (Ah! My Buddha)
Caramell Dansen (well it's from that previously mentioned AMV

)
Harmonies (Kujibiki Unbalance)
ED (Chrono Crusade)
Garnet (The Girl Who Leapt Through Time)
Don't Say Lazy (K-ON!)
ED1 (School Days)
Sore Ga Ai Deshou (Full Metal Panic Fumoffu)
OP (LoveLove)
OP (Strawberry Marshmallow)
ED2 (School Days)
OP (Binchou-tan)
Love (Kujibiki Unbalance (series))
Lonesome Traveller (Ah! My Buddha)
Hello (ToHeart2)
ED3 remix version (School Days)
ED (Ah! My Buddha)
Kimi to Yozora to Sakamichi to (Myself Yourself)
Negaiboshi (Kimikiss Pure Rouge)
Kujibiki Unbalance (Kujibiki Unbalance (original Under17 version from the original OVA))
OP (ToHeart2 OVA)
OP (School Days)
Yell (ToHeart)
Parallel Days (MoHS)
That's ~31 tracks, my full anime playlist is ~51 tracks, plus there's a JPOP list and various series specific playlists. I also have some more CDs to add (several K-ON and Clannad ones and various others)