Avatar (2009): "Rogue One is hit. I'm going in. Sorry Jake."
Full Metal Jacket (1987): "Man, **** this! **** this ****! I'm going in to bring him out."
The Incredibles (2004): "Wait here and stay hidden. I'm going in."
The Wizard of Oz (1939): "All right, I'll go in there for Dorothy. Wicked Witch or no Wicked Witch, guards or no guards, I'll tear them apart. I may not come out alive, but I'm going in there."
X2 (2003): "I'm tired of this kid's-table ****, I'm going in there."
Deadwood (2004) Episode: Something Very Expensive (2005): "I'm going in."
Yes, you can search the IMDb for quotes. :-)