Favourite Bach fugue subject

[psipsi8]

I'm not asking what's your favourite fugue. Lots of very interesting fugues have pedantic subjects, yet make astonishing use of them. One subject I "hate" is the g minor from the BWV915 toccata, as it's annoying and disingeneous but I just love how it's used. The fugue is a masterpiece...totally creeping from start to finish.
Offhand, I'd name the Eb major fugue subject of WTC II, the c minor fugue subject from the toccata BWV 911 as being some of the catchiest. So this question is very simple: Which fugues have the most entertaining subjects? On the other hand, which fugues have exceptionally boring or annoying subjects yet utilize them in a really amazing manner?

[klavieronin]

I don't know if it's my favourite but one I love is the E Minor fugue from Bk1 of WTC.

[brogers70]

I love the theme from the 3 and 6 voice Ricercars from the Musical Offering, even if it was Frederick the Great who came up with it.

[transitional]

WTC 1 C-sharp Major fugue opens really brightly.

[lelle]

I'd add a vote for Book 1 C sharp major being catchy.

I also love the C major fugue theme from the same book.

One that you could argue is "boring" is the c sharp minor fugue theme, it's just 5 slow notes. But the interval B# - E is quite interesting at the same time. And the fugue itself is amazing.

[lelle]

Oh I'd like to add the fugue in a minor in BWV 543! It's a pretty long subject but I LOVE that thing.

[klavieronin]

Oh I'd like to add the fugue in a minor in BWV 543! It's a pretty long subject but I LOVE that thing.

Ooohhh, yes!!!! That one too.

[sffffz]

Might be cliche but I like how Bach experimented with chromatic notes in BWV903. If I had to choose from WTC it would be BWV866 - it sounds joyful and dance-like.