I've written about some of the interesting cases I've done:

Cullather.  A case about a newer Affordable Care Act tax.

Merdjanoff.  An interesting international tax case.

Sauer.  There was Red Bull involved...

Lawn.  A case of "Innocent Spouse Relief"...

Kosofsky.  Why punctuation matters...

Besides these, I keep track of my success rate in Tax Court so that clients have an idea of what to expect.  94% cases see at least some reduction in tax owed; below are the numbers from over the years.

Most cases are resolved without the need to petition the Tax Court, so this only represents only a small fraction of cases, but it nonetheless gives people an idea of what to expect.  The table does not include cases where the client withdrew or otherwise canceled services.