  We review ongoing efforts to identify occupants of mean-motion resonances
(MMRs) and collisional families in the Edgeworth-Kuiper belt. Direct
integrations of trajectories of Kuiper belt objects (KBOs) reveal the 1:1
(Trojan), 5:4, 4:3, 3:2 (Plutino), 5:3, 7:4, 9:5, 2:1 (Twotino), and 5:2 MMRs
to be inhabited. Apart from the Trojan, resonant KBOs typically have large
orbital eccentricities and inclinations. The observed pattern of resonance
occupation is consistent with resonant capture and adiabatic excitation by a
migratory Neptune; however, the dynamically cold initial conditions prior to
resonance sweeping that are typically assumed by migration simulations are
probably inadequate. Given the dynamically hot residents of the 5:2 MMR and the
substantial inclinations observed in all exterior MMRs, a fraction of the
primordial belt was likely dynamically pre-heated prior to resonance sweeping.
A pre-heated population may have arisen as Neptune gravitationally scattered
objects into trans-Neptunian space. The spatial distribution of Twotinos offers
a unique diagnostic of Neptune's migration history. The Neptunian Trojan
population may rival the Jovian Trojan population, and the former's existence
is argued to rule out violent orbital histories for Neptune. Finally,
lowest-order secular theory is applied to several hundred non-resonant KBOs
with well-measured orbits to update proposals of collisional families. No
convincing family is detected.
