ok heres mine... im personally not a HUGE fan of DBZ, i did enjoy it throughout my childhood, but i always hated the "comic book" style action (4 episodes for 1 punch type shit) so none of the DBZ fights will be on my list. anyway...
1. Fairy Tail vs. Grimoire Heart (omg this battle was epic, very intense and set the tone for the rest of the story thus far)
2. Naruto vs. Pain (i mean come on... who wouldnt have this on their list? lol)
3. Maka vs. Crona (Soul Eater)
4. Captian Levi vs. Annie (the female titan, omg that nigga Levi is just amazing... that nigga 100%)
5. a toss up between Eren Jaeger vs. Annie and Fairy Tail vs. Oracion Seis (the first fight)