When a scientist sent back to the prehistoric era strays off the path he causes a chain of events that alters history in disastrous ways.

Ted Eckles: You sure we should be doing this?
Christian Middleton: There's a six-year waiting list. We paid double to cut to the head of the line, and you want to slink home? You gonna spend the rest of your life with balls the size of BBs?
Ted Eckles: What the hell.
Christian Middleton: They're so big I can hear them clanging.
Ted Eckles: It's awfully expensive...
Christian Middleton: What's the point of being rich if you don't buy things other people can't afford?
Charles Hatton: Today you stood shoulder to shoulder with Columbus discovering America. Armstrong stepping on the moon, Brubaker landing on Mars. You are true pioneers on the very last frontier: Time.
Ted Eckles: My gun doesn't work.
Payne: Believe it or not, that's a safety feature. They're all tied to Travis' gun. It won't fire until he fires first.
Ted Eckles: Why the hell not?
Clay Derris: To keep clients from shooting things they shouldn't.
Payne: Hey, Derris, how about we don't mention this in our report.
Clay Derris: No harm, no foul.
Payne: Appreciate it. You know, I'm not really that big of a dick. I just to like to talk.
Travis Ryer: We cannot have accidents.
Payne: While I was a physics major in college, we studied something called the Heisenberg uncertainty principle. It proves that there is no such thing as zero tolerance. It doesn't exist. You basically can't be 100% sure of anything no matter how hard you try. Accidents... happen.
Travis Ryer: We can't have accidents.
Travis Ryer: [to Sonia] I thought I recognized your voice. You sound just like TAMI. Although she's a little nicer.
John Wallenbeck: I haven't seen any wildlife yet. We could be in downtown Pittsburgh, for all I know.
Travis Ryer: Some things to remember us by: A safari suit, boots, helmet and a holo-disk so you can relive the jump. And I suggest you take an especially close look at this disk, Mr. Wallenbeck.
John Wallenbeck: Why's that?
Travis Ryer: Well I can't be certain until I review it myself, however, I'm pretty sure it was your shot that brought him down.
John Wallenbeck: [laughs] Well, yeah.
Sonia Rand: What did you change?
Travis Ryer: We don't know.
Alicia Wallenbeck: The doorman let me in. Told him I was your cousin from St. Louis.
Travis Ryer: I always did like Aunt Martha.
[after the commercial time machine is ruined, Sonia Rand manages to activate the plug and play Time Alteration Mainframe Interface - TAMI - program in the place that holds the original machine]
TAMI: Hello, Dr. Rand. Where exactly are we?
Sonia Rand: We're in the university.
TAMI: In the public sector now? Not a good sign.
Sonia Rand: With TAMI's hard drive, all we need is another portal.
Jenny Krase: That's easy let's go to Home Depot.
Sonia Rand: There's one nearby at the University.
Jenny Krase: A Home Depot?
[referring to the allosaurus]
Jenny Krase: Cute, isn't he?
Christian Middleton: Ted, what's the point of being rich if we don't buy things other people can't afford?
Sonia Rand: Well, you're a hunter, so shoot me.