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yeah, it's an arc. At least I'm pretty sure it is

just did

oh, sorry, i misread, i thought we were nominating the series in General. So we're nominating individual volumes then?
In that case I nominate Megatokyo Volume 3 and temporarily withdraw my Hellsing...

I nominate
Hellsing
and Megatokyo (which is actually a webcomic that gets periodically compiled to a graphic novel)