Well, I mentioned previously I bought a Panasonic Lumix GF3 so thought I would write a brief review of it. Now bear in mind I have never used an SLR so some of these issues might not be for you more regular camera users.
I bought the GF3 with two lenses, a 14mm "pancake" lens, and 14-42 lens, and although I played around with the two lenses a bit, I didn't notice anything hugely different between the variable lens at 14 and the static 14. However, the GF3 when fitted with the pancake lens is small! It is only slightly larger than a digital compact and can easily fit inside a coat pocket. The downside to that is the screen is very large and has no protection, so you have to be careful not to scratch it. TBH, i isn't huge even with the 14-42 lens on, being ~1/2 the size of an SLR.
The size does have its downsides though, there is no viewfinder and you rely upon the screen to take photos. This is okay, but there are some issues, the menu system is fiddly, and variable depending on which mode you are in, and where you start from. The lack of viewfinder (and prism) means the manual focus comes on the screen; in order to aid with the fine focussing a box of really zoomed in area comes up on the screen allowing you to fine tune the focus to the length you want. However, the fine tuning is a bit off, and a number of photos where I was aiming at a short focal length came out a good few inches behind where the screen told me I was focused.
Mostly though I used the camera in autofocus mode, which was annoying at times, the auto focus allows you to touch an area on the screen and focus on that, but it doesn't always work, possibly due to my fat fingers, but also you have to psh quite hard and you move the camera. Another function is the face recognition which finds faces anywhere, and then ignores them, it will find a face and then focus on a feature in the background, which is annoying. Also the manual is a bit shit.
Generally thugh it seems to be nice, and I took some nice photos, but it is often difficult to see how bad a photo is on the screen and it will look fine until you put it on the PC and realise just how out of focus it was.