Batman and Dr. Horrible's Sing-Along Blog Crossovers
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Medical Help by Checkerboards reviews
Dr. Crane, meet Dr. Horrible. Dr. Horrible, meet Dr. McNinja. Dr. McNinja, meet Batman. Readers, meet impending crossover insanity.
Rated: T - English - Humor/Crime - Chapters: 5 - Words: 19,633 - Reviews: 52 - Favs: 72 - Follows: 17 - Updated: 12/12/2008 - Published: 9/12/2008 - Johnathan C./Scarecrow, Dr. Horrible/Billy - Complete