Compact fluorescents now come in a wide variety of designs, which can meet most of your needs, both indoors and out.
Bulb shapes
Reflector
Spiral (twist)
Round
(globe)
Regular
Minispiral (minitwist)
Candle
Reflector
Suggested bulbs
Lamp style
Suggested bulbs
Table lamp with harp
Table lamp with clip adapter
Hanging lamp
Ceiling lamp
Ceiling fan
Wall sconce
Recessed lighting
Track lighting
Outdoor lighting
Exposed outdoor lighting
Practical tips
Outdoors: Use CFLs in sealed, weatherproof fixtures in order to optimize their service life. Check the package to be sure that the bulb can withstand winter conditions.
Dimmer (continuous or three-stage) or timer: Check the package carefully, because you need special models for these uses.
Check the height of the bulb (ballast included), to make sure it doesn't go beyond your fixture.