Power Outage

My house just suffered a power outage (Blackouts).

My Mac works fine, I just want to know if it is bad for my Mac in a long run (My Mac was connected to a external 500GB Lacie HDD.).

My mac is a 13" Macbook Pro.

Just for some extra information, does Power outages affect Computer 2.0 Speakers? My model is a Bose 20, it was operating when the power outage happened(My Macbook Pro was also operating.)

Thanks a Lot!!