Talk I gave at NSConference about manipulating Cocoa objects interactively using F-Script 2.0. Topics covered include: graphically browsing and manipulating live Cocoa objects, exploring Cocoa applications from the inside, using Cocoa interactively from a REPL, the F-Script syntax, dynamically creating Cocoa classes with F-Script, system-wide scripting (e.g., scripting iTunes) using the Cocoa scripting bridge.