Forecast (Requires CT_RaidAssist)

Quite simply, this mod displays spell casts on you and your target that have a casting time.

This is useful for healing because you can see whether or not your target already has a big heal being cast on him. As a tank, you'll know if a heal is about to land on you.

You can see who is summoning you and how far along it is. As a warlock, you can make sure you're not summoning somebody that is already being summoned.

You'll never double combat res somebody again!

After one raid with this mod you'll never want to go back.

Specifics:
Incoming spell casts are only displayed if the caster has the mod.
Incoming spell casts are only displayed if the caster is in the raid.
If you have been promoted, you can do a raid-wide version check with /fcver.
You can hide the bars by right clicking the titles (like Incoming Target Casts). In future versions this will cause a drop down menu to appear.
You can recall the bars by typing /fc.