[Jzar]

Well, as long as we're talking small miscellaneous addons, here's a few suggestions of small lesser known gems from my bag:

CCBreaker - Shows who broke CC
Ellipsis - Multi-target DOTS timer
GhostPulse - Buff / Debuff / Cooldown monitor (a la Jim's CDP)
HatTrick - Checkboxes in char frame for show hat / cape. Surprisingly addictive.
Incubator - Raid mob respawn timers.
MainAssist - Makes assisting your tank easy
NDragIt - Move frames that aren't movable, doesn't bother storing new positions.
oGlow - See item borders colored with the item's quality
PassLoot - Custom loot rolling rules. Mine's set to green on greens unless it's a recipe
ReadyCheckAnnouncer - Announce /readycheck results to party, also adds /rc alias
ReagentRestocker - Automatically buys and sells items that you specify. Also sells grays, and overstocks to bank. No more "CD is up, but I'm out of ankhs!"
Mapster - Scalable lightweight world map replacement. Not as easy to modify as cart, but it works.
Cromulent - Adds zone / instance text to the world map, like cartographer had.

And yes, I also vote for MSBT for your combat text. It's by far the most extensible one.