I'm going to try to list all the glitches I know of in FCIP and in FC2.
Farcry Instincts: Predator:(Some glitches in FCIP may work in previous Farcrys.)
Machete flying-You can melee people in FCIP with the machete, but if you tap the melee button, you will continually follow them with your machete, tapping the jump button along with the melee lock on will allow you to move higher while you approach your locked on target. This can also be done with feral attacks.
Snake attack-If you perform the above glitch while crawling, it can make some hilarious results.
Grenade jump-Throw a grenade, and right when it blows up, jump! And you should fly farther than normal. (This can be done with all explosives. Not sure about exploding vehicles.)
Frog jump-If your in water that you can stand in, then you can perform the frog jump! Aim straight up, and crawl, but right when you go under the water, push the analog forward, and you should launch about 20 feet in the air if done right.
Frog leap-Some as above, but instead of pointing up, point forward, pointing slightly up above the water.
Takin a bullet to live-Say your falling 300 feet out of the sky, you may think, "Aww I'm dead." We'll, not necessarily, if you have a friend that happens to be with you, then you may be able to live. You are slowed down every time you're shot, so if you're shot in the air, you can come to a soft landing on the ground.
Roller coaster glitch-By using two ramps stuck near each other, you can get in between them and slide!
Floating objects that you can't adjust the height on-Take a crate (or another unfloatable object), and make a spike of land, place the crate on it, then place a vehicle on the base of the spike, then make the ground flat. The crate should be conflicting with the vehicle, so, select the crate(but don't move it) and then unselect it. It should be floating in the air. You can then delete the vehicle.
Shark-If you are moving to slowly under water, then use a ladder! If there is a ladder under water, then climb on it, and then move toward the base of it. Once your off of the ladder, you can speed around like a quick fish, and if your playing as a predator, then your like a shark.
Driving boats through sand-This may sound strange, but you can drive boats through ground! If done properly. I don't quite remember how to do this, but the game lets you drive boats on ground that is about 16m high. If you get in the boat, it should let you drive around, even though on ground. One strange thing about this glitch though is that if a shot is fired in the whole map, then all the boats will pop out of the ground there driving in.
Teleporter!-If a ladder is placed barely sticking out of the ground away from you towards a wall, you should be able to get on the ladder, and it can push you through the wall.
Elevator(Not quite the same as FC2)-This is done with the above glitch, but instead of moving though walls, place the ladder pointing toward a pile crates, so when they go in the crates, it will push the person to the top of the crates.
Cloaking-The Teleporter glitch can be done with the level barriers! And if you go outside of the level boundaries far enough, you can turn invisible! But coming back out will make you visible.
Ground glitch-If you put a sharp spike of land going into the ground, you can jump in the hole, and the game may allow you to go under the terrain.
ATV jump (This isn't really glitch, but I don't think a lot of people know about it.)-You can jump normally, and on ATVs! Just push the jump button while riding the ATV.
There are more glitches too, but the rest I know are kinda pointless and you'll probably figure them out using these glitches.
Farcry 2 glitches:Black terrain glitch(or purple grass)-You all probably know how to do this glitch.
Elevator-http://fcmaps.com/p/video/video.php?view.148
MINI GUN FEST-WAIT! This isn't a glitch...or is it?

Some glitches in FC1 might be repeatable in FC2, like the ladders and roller coasters.