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Any demos / tech demos?
Realtime Radiosity 2 by Broncs
http://lightsprint.com/demo.html

You should consider submitting threads that have more meat on them than just saying "Buzzword? Discuss."

gracchus could be realtime by now?

realtime path tracing
selfpromotion

Is there any technique that isn't too slow or doesn't require you to build a raytracer with nice structures to sort all the polys?

... or you could do ambient-occlusion and pretend it's radiosity

Which gives you no colored lights / color bleeding I suppose.

just add blur :)

I think you can fake color bleeding with SSAO.

True. All you need is in the color buffer.

looks rather crappy, especially when dealing with animations (as color bleeding usually comes from a lot of objects outside of the view frustum, too)..

IMHO instant radiosity is the best one can do currently if wanting to go realtime (diffuse only of course), apart from that take a look at this

Nature SUXX

navis: you can, but god its ugly .. :) (<- applies to ssao too, but slightly less so)

SSDO looks nice.

PBGI looks promising: Michael Bunnell had a recent talk at SIGGRAPH2010, just search for "Adding Real-Time Point-based GI to a Video Game".
(At the risk of giving away my ideas of what to try out ;-)

Check out Cascaded Light Propagation Volumes...

couldn't it be faked in limited environments like navis sugggested? e.g. trace the color deltas along with the depth deltas? i bet it won't be "the real thing" but it could look okayish on certain scenes ...

yup, this is pretty cool, too.. and also coop'ed by an (ex?)scener.. :)

rasmus: Or it could be faked in limited environments by adding light sources on top of the right surfaces. ;)

doom: yep, exactly. we just need to be clear on what we're doing :) i bet most demo effects will look crap outside their limited environment ...

Some interesting stuff by Noize/Kolor

SSDO looks pretty simple compared to CLPV...

I've seen two tech demos from outside the scene with this yet. One can be found here: http://lee.fov120.com/ , I'll try to find the other one as well.

Very nice. As a present I give you modified FR shopping cart.