A lightbox module for Bootstrap that supports images, YouTube videos, and galleries - built around Bootstrap's Modal plugin.
See the github page for docs: http://ashleydw.github.io/lightbox
Update: Below is not true any more as the release cycle of bootstrap was too slow :)
As of v3.0.2 release tags reflect the bootstrap version they are associated to. ie release v3.0.2 was tested with bootstrap v.3.0.2