Hey!
Today I have some moving platforms for you! =D
Watch the video, to see how they look and work :D

Commands (the important ones):

/scoreboard objectives add P dummy P
/scoreboard objectives add Timer dummy Timer

/replaceitem entity @a slot.hotbar.0 minecraft:spawn_egg 1 90 {display:{Name:"movingPlatform"},HideFlags:127,ench:[{id:34,lvl:10}]}

/replaceitem entity @a slot.hotbar.1 minecraft:potion 1 16460 {display:{Name:"Destroy"},HideFlags:127,ench:[{id:34,lvl:10}]}

/scoreboard players add @e[​r=300] Timer 1

/entitydata @e[​type=Pig,name=movingPlatform] {NoAI:1,ActiveEffects:[{Id:14,Ambient:1,Amplifier:1,Duration:100}]}

/execute @e[​type=Pig,name=movingPlatform,score_Timer_min=1,score_Timer=1] ~ ~ ~ /summon Boat ~ ~-1 ~ {Invulnerable:1,Riding:{id:ArmorStand,CustomName:"movingPlatform",Equipment:[{},{},{},{},{Damage:1,id:planks}],NoGravity:1,Invulnerable:1,NoBasePlate:1,ShowArms:0,Small:1,Invisible:1,DisabledSlots:2039552}}

/kill @e[​type=Pig,name=movingPlatform,score_Timer_min=2]

/execute @e[​type=ThrownPotion,score_Timer_min=1] ~ ~ ~ /kill @e[​type=Boat,r=2]

/execute @e[​type=ThrownPotion,score_Timer_min=1] ~ ~ ~ /kill @e[​type=ArmorStand,name=movingPlatform,r=3]

/kill @e[​type=ThrownPotion,score_Timer_min=20]

/execute @e[​type=ArmorStand,name=movingPlatform] ~ ~ ~ detect ~ ~1 ~-1 minecraft:stained_hardened_clay 14 /scoreboard players set @e[​type=ArmorStand,name=movingPlatform,r=1,c=1] P 1

/tp @e[​type=ArmorStand,name=movingPlatform,score_P_min=1,score_P=1] ~ ~ ~0.15