With the recent reveal about possible changes to bows and arrows in 1.9, Minecraft combat has become a hot topic! In a move that borders on precognitive, SethBling released this video about splash potion arrows very shortly before the possible update news was revealed, and while it is not directly tied to the update, it's nonetheless an interesting look at possibilities with arrows and special effects in-game.
As the title suggests, his creation is capable of shooting splash potions from a bow much like an arrow, creating a long-range option for delivering your less-than-friendly payloads to monsters (or home invaders, or friends), and even includes a download schematic for you to try out, if you like. Enjoy!