To monitor the CPU temperature I use ksensors. Packman has a suse 9.2 rpm. It's a frontend for lmsensors, for which there is no suse rpm, but the installation for 2.6 kernels is easy since no compilation is required.
There are heaps of subtitle editors for Windows, but I found only one usable for Linux: ksubtile. It's not perfect but usable. It uses SubRip format (*.SRT). In these files subtitles have a running number, end- and startime down to milliseconds given for each subtitle. The import function of subtile fails occasionally, but you can use mplayer to convert subtitle files into srt format. BTW: If your movie and the subtitle file have the same name and are in the same directory they will be loaded automatically by mplayer (unless you switch this function off).
I am constantly adding images to my genealogy database. The final destination of these images is the web. The annotation of these images is stored inside the image file itself. I use jpeg images and I annotate the images with RDFPic. RDFPic is a java application that stores metadate using the RDF (resource description framework) format in the comment section of the jpeg file. Unfortunately the program can handle only jpeg images and not tif or png images.