I have done a decent amount of travel around England recently! One of the senior tutors in my program is a member of Christ Church College where he got his D-Phil (what they call a Phd at Oxford).
Christ Church produced some very notable alumni including: Lewis Carroll, John Locke, 13 Prime Ministers, Albert Einstein did research here, founder of Pennsylvania William Penn, and John Wesley the founder of Methodism! Many of whom can be seen in the paintings in their dining hall.
The real reason to really love Christ Church though is it was where many scenes in Harry Potter were filmed!