Wordtrans is a frontend for several dictionaries. It supports some plain text dictionaries such as i2e (English-Spanish) and de-en (German-English), Babylon Translator dictionaries, and dict servers dictionaries. Some features include console and X (Qt) versions, good speed, and the ability to watch the clipboard and automatically translate the word there.
SMPlayer is a complete media player for Windows and Linux. It uses MPlayer as a playback engine, which is capable of playing most video and audio formats (AVI, mkv, WMV, MP4, MPEG, etc.). It can also play and download YouTube videos. One of the most interesting features is that it remembers the settings of all files you play. So if you start to watch a movie but have to leave, when you open that movie again it will resume at the same point you left it, and with the same settings: audio track, subtitles, volume, etc.