First here is the video:

In this video they mention that each of the multiplayer modes is customizeable in the level editor. This is a lot deeper than I initially expected the multiplayer customization to go honestly and it effectively means that you can take and build an infinite number of multiplayer boards for you and your friends to play...but whats even better is that you can share them with your friends over the wiiconnect feature and this means there is a possibility we could see something similar to the websites for SSBB stages where people have created a searchable database of the best stages.

When you realize that the levels in boom blox are more important than stages in brawl it should be easy to understand why this is such a good thing. I hope this game does well and its well worth the full price with near infinite content imho (FYI - The IGN team stated in their recent podcast it will be full price).

Also if you're interested on the right side of the media player above are more boom blox vids from IGN.  They play with the editor and really show off how fantastic and easy it is to use. 

There's this sucker and then there's Blast Works. One has good local multiplayer, the other is scrolling shooter and $10 cheaper.

The indecision might make my head explode, but I feel a need to pick one or the other. WiiWare comes out this month and I can't spend all my money on games!

Watch the "Created Level #" videos 1 through 4...I think that will make it easier...they look simply amazing...I was hyped for this game before but now I'm through the roof. I want to play this about 10x more than GTA IV =P

Blast Works is a highly expanded update of a free PC game. I suggest Boom Blox.

Yeah I went and watched some more blast works videos and I honestly think Boom Blox is going to be more fun...with that said its pretty much just my opinion.

Blast Works has a much more in depth design system which is both good and bad...good because you have more choices and options, but bad because it looks almost too in-depth to me.

I personally think Boom Blox is going to be hands down more fun (and for more people at once) but I know some people who would like Blast Works just as much or more.

i realized how fun this game was going to be when i saw the cannon video. I'm definitely going to pick this game up.

Bump for those who aren't creatures of the night =P

Holy crap! I just became extremely interested in this game. No longer will I be known as the guy who owns a Wii, but still doesn't have a single decent multiplayer game. =P

(ok, I won't be know as that after Brawl comes out anyway, but the more the merrier)

Reverse Jenga, heh. Looks kinda fun.