Hmmm. I have quite a bit, actually.
All time favorites include: Highschool DxD, Trinity Seven, To Love RU, and Shimai Maou no Testament.
Honorable mentions: Danmachi, Campione!, Date a Live, and In Another World With My Smartphone.
Comedy: Konosuba, Boku ha Tomodachi ga Sukunai (Haganai), Keijo!!!!, SNAFU, and Seitokai Yakuindomo.
Their are some anime that didn't make this list, however, they made me interested enough to check out the source Light Novels. The source material is incredible and I eagerly read it every new release. This includes: Blade Dance of the Elementals (The anime was alright, but the LN is incredible.), Highschool DxD (The anime is damn good, however, the LN is one of the greatest stories I have ever read. The LN is so much more than ass & titties.), In Another World With My Smartphone (Finally an MC that isn't a spineless fool.), and Shinmai Maou no Testament. (I actually started reading the LN before the anime came out.)