What ho! Happy Holidays and such. This is my first post in this particular community, though I've been lurking for years.
It's a little off-topic, but I've been doing a lot of delving into the Meyers-Briggs Type Indicator lately and an epiphany regarding everyone's favourite valet and his gentleman came upon me.
Reginald Jeeves' MBTI type: ISTJ - The Duty-Fulfiller
Bertie Wooster's MBTI type: ESFP - The Performer
Oh, and just to make it better, ISTJ and ESFP are considered "natural partners" according to the relationship pages.
These are just my intuitive readings of the characters, however, so feel free to disagree and/or share your opinions in the comments.