The National Football League just cut a $600 million deal with Sprint ( S) so that cell-phone subscribers can get NFL highlights, statistics and programs on their handsets, Jim Cramer said on his "RealMoney" radio show Wednesday. The deal provides more evidence that the Internet is still an expanding business. Cramer said that he likes Rackable Systems ( RACK), Akamai Technologies ( AKAM) and F5 Networks ( FFIV) as plays on the expanding reach of the Internet highway. But he warned that these have been "fast and furious stocks," running up very high, and that they could be due for a pullback. Cramer said that he would wait for the price to come down before buying more, and then he would buy only part of his position. Putting all your money on the table is the sin of arrogance, he said. Buy some, and then wait for the stock to come down. The leaders in the Internet space are using semiconductor chips made by Advanced Micro Devices ( AMD), and he believes that it's because AMD's chips are cheaper and faster than chips made by Intel ( INTC). A caller wanted to know about why he should buy Avanex ( AVNX). Cramer likes the company because it is part of a basket of stocks that he says is key to video on demand. Almost every phone line in the country is copper, and the phone companies need to change over to fiber in order to transmit television and broadband signals into our homes, Cramer said. This basket of stocks is necessary for this rollout, he said. Cramer said that Avanex products enable phone companies to transmit signals, Finisar ( FNSR) makes the semiconductors that allow this to happen and JDSU ( JDSU) makes the testers. He also likes Mindspeed Technologies ( MSPD), which makes equipment that beams signals into your home, and Cramer believes that the company is about to report its first good quarter. Bookham ( BKHM) and Ciena ( CIEN) are also in this basket, he said.