The basic player view is a joy to use, where Apple seems to be taking a step back with iTunes 8.

ENGADGET: Zune 3.0 hands-on Hands-on

Mailbox has a beautiful, minimalist interface that is a joy to use.

FORBES: Another Overnight Sensation: Mailbox Is Dropbox's Instagram

When things go according to plan, though, Switchblade is a joy to use -- it provides quick access to any key combination imaginable, stamped with a colorful custom image.

ENGADGET: Razer Blade review (late 2012)

Its 10 configurable keys are still a joy to use as an application launcher, and being able to customize the display of each individual key is a geeky pleasure of the rarest kind -- but that consistency means the pad's shortcomings are the same, too.

ENGADGET: Razer Blade review (late 2012)

We took it for a quick flight through some canyons in an F-16 and, though we nearly blacked out a few times and came close to losing our cookies thanks to the over-sensitive head tracking setup, we have to admit the HOTAS was quite a joy to use.

ENGADGET: Thrustmaster unveils its perfect replica HOTAS Warthog flight controller, we go hands-on (video)

So I wanted to build products that had an emotional appeal, and people would derive joy and want to use them all the time.

FORBES: Simple Design And Integrating Solutions

The software was so easy to use that it made owning an iPod a joy and quickly spread through Windows-land.

FORBES: iSlate Software Check