Here’s my version of the Los Angeles temple from 2001. At this time I had a standard minifigure as my angel Moroni, he was subsequently replaced first by C-3P0, and eventually by a gold minifigure key chain.
thefairlyunkempt created a great vignette of Elder Bednar at General Conference
View his Flickr stream here: http://www.flickr.com/photos/thefairlyunkempt/
Ben Watson created this amazing rendition of the Mount Timpanogos temple
Nathan Cunningham created several vinettes depicting scenes from The Book of Mormon
The Van Wagenen family has created a book telling Book of Mormon stories using LEGO