Blindify is a jQuery plugin which creates a slideshow featuring a blinds effect transitioning (either vertical or horizontal) between a list of images.
tCycle is a minimalist jQuery slideshow plugin that won't blow your bandwidth budget.
It supports the following features:
Smoothbox is a simple, lightweight, and responsive jQuery lightbox plugin.
A tutorial about "Building a mosaic transition effect between two photos using jQuery". Tutorial includes 2 demo page with different mosaic transition effect.