Back in the days, we watched the 'combat' window like a hawk to see spellcasts interrupts and if mobs where gating.
Then came along the sound trickers and gameparse, both really nice features (gameparse being an external app).
Today I would like to jump the evolution a bit further,
EverquestHUD will add castbars on top of windowed everquest windows.
castbars include your own spells, spells from defined friendly sources and from enemies (friends and enemies castbars will only be able to identify gate spells unless you have spell awareness)
While i work on this software i will be very interested in ideas for added features / addons. Currently scheduled addons to come include critline tracking (remembers your highest crits on damage / heals) and a wow alike combat scrolling texts addon. Users have expressed interest in raid event timers as well, so that will proberbly have to come before sct.
The ongoing discussion and updates can be followed
here