Embedding a live webpage so that it is a seamless part of the Powerpoint is amazingly easy but
Close Powerpoint.
INSERTING A WORD DOCUMENT, PDF, SPREADSHEET, ETC.
Main Menu Insert>Object
Note> When inserting a document, Powerpoint will insert it into one slide; any overflow will not display.
ANIMATED IMAGE ACROSS THE WHOLE SLIDESHOW
As a background:
View>Master>Slide Master
From the Master Slide, right click on slide background.
Small animation on a slide:
Embedding fonts will save the fonts along with the presentation.
Note>Only truetype fonts have this option.
Under Tools>Options

Action Settings provide a means of providing some interactivity through telling Powerpoint to do a specific task, such as open a website. An Action Button is a preconfigured graphic which is packaged with a choice of Action Settings. Action Buttons include clickable forward/backward navigation, a help button, and even a customizable button. Action Settings can be added to most any graphic or sound by using the Right Click properties menu.
TRANSITIONS AND NAVIGATION
Let's add a nifty transition from slide to slide.

EMBEDDING MEDIA
(YouTube and other web based media)
One of the advantages of embedding YouTube (or other flash files hosted on the web) into Powerpoint is that as long as there is an internet connection, everything should run correctly.
WORDART and HYPERLINKS
Insert>Picture>WordArt