lets look closely at bamdil's contribution,it's simple and biblical.if we are to relate with God, we must do it in his ways and how do we know his ways-refer to his word in the bible.if you know his word,you will understand that, though we necessary do not have to be in same rhyme, there are basic underlying principles and foundations of prayers that must be followed.

Jesus, in the book of Mathew (the Lord's prayer) implicitly stated that prayer is a two way communication between God and man. When we pray, we therefore must have the attitude that we are talking to God 'our father' and this has to be done with respect and good manner.If you want to discuss with your earthly father, it would look absurd if you approach him shouting and jumping in an inordinate manner.However, we must not forget that there may be cases whereby desperation may make one to shout/cry/weep (like Hannah (when asking for a child),Jesus (in Gethsemane) and Jacob (when he had to wrestle with an angel from God) but this does not usually happen.

As for the 'fire from heaven, fall down and die type of prayers', sometimes they are relevant if and only if one is absolutely sure that the devil/demons ae being addressed and not a fellow human.

However,we need to know that the best way to pray is to be led by the Spirit of God.