I got a few I use often; mostly when I playing by myself or with guildies.
Leader's Nightmare
Spear Mastery: 8+1
Command: 8
Leadership: 10+1+1
Illusion Magic: 10
Disrupting Throw, Barbed Spear, Anthem of Weariness, Anthem of Flame, "Find Their Weakness!", Fevered Dreams, Fragility, Signet of Return
It does a great job of spreading conditions around and has excellent conjunction with Fragility for constant damage will the conditions work their magic. Energy isn't really too much of a problem if you're sporting the correct gear or if you'd like; one can swap D-Throw for "GftE!" for a bit more energy gain.
Para Weapons
Channeling Magic: 12
Spear Mastery: 12+1+1
Blazing Spear, Merciless Spear, Wild Throw, Weapon of Fury, Splinter Weapon, Ebon Battle Standard of Honor, Drunken Master, Signet of Return
I think that some of Ritualist elites ought to be more used so I thought of this build. Weapon of Fury keeps your energy pool up, as well as providing the ability to use more adrenaline-intensive skills quicker. Splinter Weapon, obviously, is to provide the Para with its dream, AoE damage, but it can be opted out for Nightmare weapon or any other utility that proves useful.
Generic Paragon
Spear Mastery: 8+1
Command: 12
Leadership: 10+1+1
Lightning Spear, Vicious Attack, "Go for the Eyes!", "There's Nothing to Fear!", "Fall Back!", "Incoming!", Optional, "We Shall Return!"
A Classic, In my opinion. I use this build for any situation I'm unsure of or just too lazy to think up of a build. It can also be used for PvP, but one needs to swap out "TNtF!" for "Stand Your Ground!" and "WSR!" for Signet of Return. I mainly like this build for its versatility and all-around support features, and oddly the Optional skill slot allows for a lot of wiggle-room to play with or makes a fantastic slot for any PvE skill. Oh, if you haven't noticed there's no lack of shouts so energy is nearly never a problem.
Well, I don't want to give too many builds away, but those are a few of my favorites that I've developed for fun. I hope that people can enjoy these as much as I have and can lay new inspiration upon others who wish to create their own. :P