This study investigates the syntax of incomplete category fronting in German, carried out from a cross-linguistic perspective. The study presents a wealth of empirical evidence involving unbound traces created by remnant topicalization, wh-movement, scrambling, left dislocation, and extraposition. Four characteristic properties of remnant movement are identified that pose severe problems for a representational movement theory. It is argued that these properties can be fruitfully addressed on the basis of Chomsky's Minimalist Program, and that they follow from a derivational movement theory that incorporates the Barriers Condition, the Strict Cycle Condition, Fewest Steps, Last Resort, and the Minimal Link Condition but completely dispenses with surface filters. The text provides an empirical underpinning for the Minimalist Program and presents a powerful argument for a derivational theory of grammar.