I have a jeep cherokee and i was wondering if these do anythign more or are any better than just regular plugs  

Depending on what year your Jeep is, it's probably best to save your money. If you look at the tips on the plug you'll notice there isn't much gap between the contacts. The gap is also not adjustable on the Bosch +4 plugs. I tried running them in my truck and found out the hard way. The plugs fouled after only 3 days because the gap in the plugs is so small! There wasn't enough gap for the spark so the spark was a lot cooler than it would be normally. It wasn't till I talked to a few other people that I found out that Bosch +4 should only be run in newer, very clean running engines i.e.- Honda's, Toyota's. If your Jeep is fairly new you might be alright. Otherwise you're going to spend 4 bucks a plug for nothing and be able to tell somebody else what POS they are. I would suggest just buying a standard plug that has platinum tips on it. I know you have a Jeep but try some Heavy Duty Autolite Platinum's in it. It pained me to use them in my Chevy, but they're cheap and work great! 

its a 2001 with about 54k on it  

I was changing AC Delco plugs in my 5.0L chev with every oil change....The platinum 4+ have lasted me over 50,000Km  and look like new.

The platinum 4+ I bought for my truck actually had a wider gap than  reccomended, which was fine for me cus I am running a MSD6A box anyhow.

They have worked for me, but I have heard from many people like them.

I think NGK makes a pretty good standard plug, low price, high quality.

I dont reccomend putting in platinum 4+'s if you are expecting them to give you more power or better mpg.....alone they wont make much of a difference.

They will help fuel mileage and power when combined with good quality wires and a good quality coil, but you won't notice the power unless you pull heavy loads, or go uphill in a standard.  

i will where your either driving uphill or downhill there are no flat roads here