Pardon me for linking a few videos of tribute bands, but these two groups are REALLY good - for me, they're even better than the real thing nowadays, as their singers are actually able to do pretty much the whole catalogue justice:
https://youtu.be/X8-vombGmIY
https://youtu.be/Dobv4qY67dU
Especially the latter band, These Days (Brazil), is awesome. They've paid attention to the slightest details of a '95-'96 Jovi concert in a way that's rarely been matched - just watch and be amazed... They even perform Midnight Rider before Wanted!
PS. Plus, they've thrown in some cool stuff from the post-2k gigs as well, such as the "jukebox" section of BM (with "Hugh" singing Pretty Woman!!!) and "Richie" singing These Days. Also, the full BJ concert experience feels particularly realistic when you get "Jon" straining his nuts off on Prayer (gripping the mic on the high note before the solo and everything)! However, the guy moves a lot more on stage overall than JBJ does these days (no pun intended)...
The former band, New Jersey (Italy), is great as well, and certainly recommendable watching, but unlike the latter guys, they've unfortunately got some of the less-than-stellar, post-2k songs in their set, too - so those of you that are frightened to hear BWC, WWBTF and Who Says at a real BJ concert, by all means do yourselves a favor and don't watch the first video I posted.
PS Vol.2. And yes, I agree with all of you that the real thing (even at their worst gigs - maybe Hull '06 excluded) used to be a lot better in concert than both these bands combined until as recent times as the summer of 2011. However, now I really don't know what to think about the band live... maybe Jon should really stick to those acoustic (or semi-acoustic), diehard-type-of shows from now on. I also don't mind the KOS thing as long as he keeps Always out of their sets - as no matter how embarrassing it is to even think about it, Jon will probably keep on trying to do the big ballads for the rest of his performing career, even after the band will be buried in its current form.