Japanese anime fans supply an informal top 10 of anime which any viewer would be at a loss to miss – assuming they are not Type A of course…
1. K-ON!
2. Angel Beats!
3. Bakemonogatari
4. To Aru Kagaku no Railgun
5. Gintama
6. Toradora!
7. To Aru Majutsu no Index
8. Haruhi
9. Durarara!!
10. Evangelion
The glaring absence of Madoka from the top of the list (Madoka manages a joint 12th with Code Geass, closely followed by Ore no Imouto at 13th) is of course likely down to it being not yet concluded at the time of voting.