The Catherine Tate & David Tennant sketch from Comic Relief Tennant plays substitute teacher Mr. Logan, who goes head to head with Tate’s 'Lauren Cooper'. Absolutely hilarious, this one never gets old! (from Geek Chic ~JB pop-Eggs)
To Christopher Eccleston: thank you for introducing me to The Doctor. You were FANTASTIC. To the Ninth Doctor: I miss you already. Eccleston: Thank you for being the Doctor and being a part in the wonderful series!