Are there any methods included in Scala to convert tuples to lists?

Using Shapeless -

@ import syntax.std.tuple._
import syntax.std.tuple._
@ (1,2,3).toList
res21: List[Int] = List(1, 2, 3)
@ (1,2,3,4,3,3,3,3,3,3,3).toList
res22: List[Int] = List(1, 2, 3, 4, 3, 3, 3, 3, 3, 3, 3)

Note that type information is not lost using Shapeless's toList.

Works with any tuple (scala 2.8):

myTuple.productIterator.toList

Scala 2.7:

(0 to (myTuple.productArity-1)).map(myTuple.productElement(_)).toList

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Not sure how to maintain type info for a general Product or Tuple, but for Tuple2:

def tuple2ToList[T](t: (T,T)): List[T] = List(t._1, t._2)

You could, of course, define similar type-safe conversions for all the Tuples (up to 22).