Well these are not from any hero but from the Pyrion Flax announcer pack which I find quite funny at times-

1. They denied their tower! Can we still be friends?(Enemy tower denied).

2. Mrs. Flax asks me if I intend to spend some time with family. My answer is NO!(On roaming here and there)

3. It's a lovely day outside and here you are, playing Dota 2.(Welcome sound)

4. All random? What the bloody hell is going on?(All random)

5. Into the valley of death rode the five idiots.(Beginning of the game)

6. This team is the manliest team imaginable! (Full carry team)

7.They have megacreeps. Just go hide in the fountain. It's cool, everybodydoes it.(When enemy has mega-creeps).

8. So l..let me get this straight: you walk into a man's house, you kill him, and you take his cheese. What's wrong with you? (Killing Roshan for the third time).

9. Huskar used to be called Buskar, but people don't give you spare change when you stab them in the neck with a flaming spear.(On picking Huskar).

10. Who died and made you king of the zombies?(On picking Undying).

And there are many more. The announcer humorous and witty I must say. :D