Once upon a time, I somehow failed to take the parking brake off before takiing and taking off in a tailwheel configured aeroplane on wet grass (which is probably the only reason that I got away with it, it was a somewhat juddery take-off !).
Pre-landing checks.
"B" - Brakes on / off, confirmed off.
OH GOD - I'd left the parking brake on. De-select.
I won't deny screwing up pre-flight, but without adherence to a pre-landing checklist (memorised, but that's a lot less relevant) I'd probably have stood the aeroplane on its nose and wrecked it
Which is how the system's supposed to work. Whilst we all aim for zero mistakes, regular checks are designed to pick up errors and stop them staying with you to cause problems. As they did there.
G.