I, for one, will probably never like vignetting in photos. The more I see it added to photos, the more strongly I feel how I don't like it. But that is a purely personal observation and has nothing to do with the photos as such. So don't mind me.
As to the second: it looks like the dog is looking up from some mass it is sitting in with only its nose and eye managing to poke through that mass (of blurriness really). The effect - to my mind - is more funny than anything else. Sure, it also is interesting to look at, but I am not sure I'd choose such a wide open aperture at all times. It may be a good playing tool though ...