Elchan's site
This is usually updated daily. But remember it uses the current movie price for adjusts. This is often close enough but for big blockbusters, or movies that exceed expectatiions (or bomb) the adjust could be different. But it's a nice easy to use site that gives you a good idea of what where bonds are going to adjust next (or in the future). Use the Portfolio health check to see if you have any bonds you may be holding wrong This can catch bonds that have been recently attached or detached from upcoming movies that may cause them to a short instead of long, etc.
Kai Gee site
Not updated as often but it has a handy tool for calculating the adjust with your estimates of a movies box office
Put in the movie symbol in the search box. On the movie page, enter the price you think the movie will delist at (big movies often have the price inflated because of opening adjust which is often front loaded - the delist price can be much lower (see the Harry Potter and Twilight movie). Press the recalculate adjust button below the starbonds list. For the current difference, enter the current starbond price and press the button.
You can also do this for individual star bonds, and plug in the current box office used for the tag for movies that add alot of box office after delist (ex. Gravity, Cloudy 2) to update the current tag (which will increase the adjust).